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Index: S
- s class
: sendmail, 32.5. Alphabetized Reference
- =S command (rule-testing mode) : sendmail, 8.5. The Workspace
- S configuration command
- =S command (rule-testing mode) : sendmail, 8.5. The Workspace
- -s database switch
: sendmail, 33.3.4.10. -s space replacement character (V8.7 and above)
- s flag : sendmail, 30.8. Alphabetized F= Flags
- S flag : sendmail, 30.8. Alphabetized F= Flags
- S line (host status file) : sendmail, B.1. Status file lines
- S line (qf file)
- s flag : sendmail, 30.8. Alphabetized F= Flags
- $s macro
- $S macro
: sendmail, 31.10. Alphabetized Reference
- s option : (see SuperSafe (s) option)
- S option : (see StatusFile (S) option)
- S rule-testing command : sendmail, 38.4.1. Show Rules in a Rule Set with =S
- -s switch (sendmail) : sendmail, 36.7. Alphabetized Reference
- S/Key codebook scheme
- s option : (see SuperSafe (s) option)
- S= equate
- sa command
: Practical UNIX & Internet Security, 10.2. The acct/pacct Process Accounting File
- sabotage
- (see denial of service)
- (see terrorism; vandalism)
- (see denial of service)
- safe, storing security information in
: TCP/IP Network Administration, 12.2.6. Secure Shell
- SafeFileEnvironment option
- SAGE (System Administrators Guild)
: Building Internet Firewalls, A.5.5. System Administrators Guild
- salt
- sanitizing media
: Practical UNIX & Internet Security, 12.3.2.3. Sanitize your media before disposal
- SATAN package
- SATAN tool
: TCP/IP Network Administration, 12.4.3.2. SATAN
- saturated networks : (see networks and networking)
- savacct file : Practical UNIX & Internet Security, 10.2. The acct/pacct Process Accounting File
- saved UID : Practical UNIX & Internet Security, 4.3.2. Saved IDs
- SaveFromLine (f) option
- saturated networks : (see networks and networking)
- saving
- aliases in symbol table
- backup media
: Practical UNIX & Internet Security, 7.1.5. How Long Should You Keep a Backup?
- bounced messages in qf file
- sbrk command
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- scaling well
- scanf command
- SCANF macro
: sendmail, 18.8. Alphabetized Reference
- scanning networks : Practical UNIX & Internet Security, 17.6. Network Scanning
- SCCS (Source Code Control System)
- scanning networks : Practical UNIX & Internet Security, 17.6. Network Scanning
- Scherbius, Arthur
: Practical UNIX & Internet Security, 6.3. The Enigma Encryption System
- score keepers : Building Internet Firewalls, 1.2.2.3. Score Keepers
- scp (secure copy) : TCP/IP Network Administration, 12.2.6. Secure Shell
- screen savers : Practical UNIX & Internet Security, 12.3.5.2. X screen savers
- screend package
- score keepers : Building Internet Firewalls, 1.2.2.3. Score Keepers
- screened host architecture
- screened subnet architecture
- screening routers
- Building Internet Firewalls, 4.1.1. Packet Filtering
- Building Internet Firewalls, 6. Packet Filtering
- (see also packet filtering)
- acceptable addresses for : Building Internet Firewalls, 6.5. Conventions for Packet Filtering
- choosing : Building Internet Firewalls, 6.8. Choosing a Packet Filtering
- configuring : Building Internet Firewalls, 6.2. Configuring a Packet Filtering
- proxy systems and : Building Internet Firewalls, 7. Proxy Systems
- rules for : Building Internet Firewalls, 6.5. Conventions for Packet Filtering
- where to use : Building Internet Firewalls, 6.8.8. It Should Have Good Testing and
- Building Internet Firewalls, 6. Packet Filtering
- Building Internet Firewalls, 4.1.1. Packet Filtering
- screens, multiple
: Practical UNIX & Internet Security, 12.3.4.3. Multiple screens
- script command : Practical UNIX & Internet Security, 24.1.2. Rule #2: DOCUMENT
- script files
- script command : Practical UNIX & Internet Security, 24.1.2. Rule #2: DOCUMENT
- TCP/IP Network Administration, 1.7. Application Layer
- TCP/IP Network Administration, 6.1.5.1. Enabling and disabling the interface
- (see also startup script)
- (see also UNIX, systems)
- debugging tips : TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections
- invoking dialup IP (dip) : TCP/IP Network Administration, A.1. Dial-Up IP
- TCP/IP Network Administration, 6.1.5.1. Enabling and disabling the interface
- TCP/IP Network Administration, 1.7. Application Layer
- scriptfile
: TCP/IP Network Administration, A.3. chat
- scripting language : TCP/IP Network Administration, 6.3.2. Dial-Up PPP
- scripts, CGI : (see CGI, scripts)
- scytales : Practical UNIX & Internet Security, 6.1. A Brief History of Cryptography
- search entry, in resolv.conf : TCP/IP Network Administration, 8.2.1. The Resolver Configuration File
- search programs : Building Internet Firewalls, 2.6. Other Information Services
- search warrants
- scripting language : TCP/IP Network Administration, 6.3.2. Dial-Up PPP
- searching for .rhosts file
: Practical UNIX & Internet Security, 17.3.18.5. Searching for .rhosts files
- Seberry, Jennifer : Practical UNIX & Internet Security, 6.5.4.3. HAVAL
- secondary nameservers
- Seberry, Jennifer : Practical UNIX & Internet Security, 6.5.4.3. HAVAL
- TCP/IP Network Administration, 3.3.4. BIND, resolver, and named
- TCP/IP Network Administration, 4.4.1. Obtaining a Domain Name
- TCP/IP Network Administration, 8.1.1. BIND Configurations
- TCP/IP Network Administration, C.2. named.boot Configuration Commands
- configuring : TCP/IP Network Administration, 8.3.1.2. Primary and secondary server configurations
- TCP/IP Network Administration, 4.4.1. Obtaining a Domain Name
- TCP/IP Network Administration, 3.3.4. BIND, resolver, and named
- secrecy
- secret keys
: Practical UNIX & Internet Security, 6.4.6. RSA and Public Key Cryptography
- Secret Service, U.S.
- secure copy (scp)
: TCP/IP Network Administration, 12.2.6. Secure Shell
- Secure Hash Algorithm (SHA)
- Secure HTTP
- Secure NFS
: Practical UNIX & Internet Security, 19.3.2.4. Using Secure NFS
- -secure option
- secure option for /etc/exports
: Practical UNIX & Internet Security, 20.2.1.1. /etc/exports
- SECURE points : TCP/IP Network Administration, 12.4.3.1. COPS
- Secure RPC
- SECURE points : TCP/IP Network Administration, 12.4.3.1. COPS
- Practical UNIX & Internet Security, 19.3. Secure RPC (AUTH_DES)
- Practical UNIX & Internet Security, 19.3.4. Limitations of Secure RPC
- with NIS/NIS+
- Practical UNIX & Internet Security, 19.3.4. Limitations of Secure RPC
- NTP and
: Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- reauthentication : Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- versus Kerberos : Practical UNIX & Internet Security, 19.6.2. Kerberos vs. Secure RPC
- reauthentication : Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- Practical UNIX & Internet Security, 19.3. Secure RPC (AUTH_DES)
- secure shell (ssh)
: TCP/IP Network Administration, 12.2.6. Secure Shell
- Secure Socket Layer : Practical UNIX & Internet Security, 18.4.1. Eavesdropping Over the Wire
- secure terminals : Practical UNIX & Internet Security, 8.5.1. Secure Terminals
- SECURE_USERS variable : TCP/IP Network Administration, 12.4.3.1. COPS
- SecureID : Practical UNIX & Internet Security, 8.7.2. Token Cards
- SecureNet key : Practical UNIX & Internet Security, 8.7.2. Token Cards
- security
- Secure Socket Layer : Practical UNIX & Internet Security, 18.4.1. Eavesdropping Over the Wire
- Building Internet Firewalls, 1.4. What Is an Internet Firewall?
- Building Internet Firewalls, 8.1.1.1. SMTP for
- Building Internet Firewalls, 8.10.4. DNS Security Problems
- Practical UNIX & Internet Security, 2.1. Planning Your Security Needs
- Practical UNIX & Internet Security, 9.1.2. Read-only Filesystems
- Practical UNIX & Internet Security, 12.1.1. The Physical Security Plan
- sendmail, 18.2. Vendor Versus Compiling
- sendmail, 22. Security
- TCP/IP Network Administration, 1.7. Application Layer
- (see also firewalls)
- (see also integrity)
- (see also incidents, attacks, threats)
- (see also intruders/attackers)
- (see also physical security)
- (see also printers and printing)
- (see also system administration)
- against system failure : Building Internet Firewalls, 3.5. Fail-Safe Stance
- audit : (see auditing)
- bastion host speed and : Building Internet Firewalls, 5.3.2. How Fast a Machine?
- bogus qf files
- Building Internet Firewalls, 8.1.1.1. SMTP for
- C line (qf file)
: sendmail, 23.9. The qf File Internals
- CGI scripts
- changed detection
- check_relay rule set
: sendmail, 29.10.3. The check_relay Rule Set
- checking arguments : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- choke points
- checking arguments : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- commercial authentication systems
: Building Internet Firewalls, 10.4.3. Commercial Solutions
- critical messages to log
- cryptography
- (see cryptography)
- (see encryption)
- (see cryptography)
- default stances
: Building Internet Firewalls, 6.2.3. Default Permit Versus Default Deny
- default user identities : sendmail, 13.2.5. The Default User Identities
- defense in depth
- default user identities : sendmail, 13.2.5. The Default User Identities
- definition of
: Practical UNIX & Internet Security, 1.1. What Is Computer Security?
- designing for network : Building Internet Firewalls, 1.4.3. Buying Versus Building
- digital signatures : (see digital signatures)
- disabling finger : Practical UNIX & Internet Security, 17.3.8.2. Disabling finger
- disk quotas : Practical UNIX & Internet Security, 25.2.2.5. Using quotas
- diversity of defense
- designing for network : Building Internet Firewalls, 1.4.3. Buying Versus Building
- dormant accounts, finding
: Practical UNIX & Internet Security, 8.4.3. Finding Dormant Accounts
- drills : Practical UNIX & Internet Security, 24.1.3. Rule #3: PLAN AHEAD
- encryption, network-level : Building Internet Firewalls, 10.5. Network-Level Encryption
- environment variables and
- drills : Practical UNIX & Internet Security, 24.1.3. Rule #3: PLAN AHEAD
- /etc/passwd
: (see /etc/group file; /etc/passwd file)
- -f switch and
- fail-safe stance
- file permissions
: sendmail, 13.2.4. The Default File Permissions
- files and : (see appending to files)
- firewalls : (see firewalls)
- forged mail
- files and : (see appending to files)
- four steps toward
: Practical UNIX & Internet Security, 2.4.4.7. Defend in depth
- host : Building Internet Firewalls, 1.3.3. Host Security
- HTTP : Building Internet Firewalls, 8.6.3. HTTP Security
- identification protocol : Practical UNIX & Internet Security, 17.3.12. Identification Protocol (auth) (TCP Port
- important of simplicity of : Building Internet Firewalls, 3.8. Simplicity
- improving DES algorithm
- host : Building Internet Firewalls, 1.3.3. Host Security
- incident response teams
: (see incident response teams)
- incidents : (see incidents, attacks, threats)
- :include: lists : sendmail, 25.2.2. Tradeoffs
- insecure networks : Building Internet Firewalls, 4.4.2. Insecure Networks
- internal network protection : Building Internet Firewalls, 4.4. Internal Firewalls
- IP
- incidents : (see incidents, attacks, threats)
- IP_SRCROUTE macro
: sendmail, 18.8. Alphabetized Reference
- IRC and : Building Internet Firewalls, 8.9.2. Internet Relay Chat
- keeping checksums secure : Building Internet Firewalls, 13.5.3. Keeping Secured Checksums
- lack of : Building Internet Firewalls, 1.3. How Can You Protect Your Site?
- laws and : (see laws)
- least privilege
- IRC and : Building Internet Firewalls, 8.9.2. Internet Relay Chat
- legal liability
- legal responsibilities
: Building Internet Firewalls, 11.2.3. External Factors That Influence
- levels of NIS+ servers : Practical UNIX & Internet Security, 19.5.5. NIS+ Limitations
- link-level : Practical UNIX & Internet Security, 16.3.1. Link-level Security
- of machine : Building Internet Firewalls, 5.8.1. Securing the Machine
- mechanisms included within applications : TCP/IP Network Administration, 12.2.5. Secure the r Commands
- message digests : (see message digests)
- modem pools : Building Internet Firewalls, 10.6. Terminal Servers and Modem Pools
- modems and
- levels of NIS+ servers : Practical UNIX & Internet Security, 19.5.5. NIS+ Limitations
- monitoring
- multilevel (defense in depth)
- name service and
: Practical UNIX & Internet Security, 16.3.2. Security and Nameservice
- national : Practical UNIX & Internet Security, 26.2.2. Federal Jurisdiction
- netacl : Building Internet Firewalls, 5.8.3.2. Using netacl to protect services
- network
- national : Practical UNIX & Internet Security, 26.2.2. Federal Jurisdiction
- (see network services)
- (see networks and networking)
- (see network services)
- operating system bugs
: Building Internet Firewalls, 5.8.1.2. Fix all known system bugs
- passwords
- personnel
- planning
: TCP/IP Network Administration, 12.1. Security Planning
- policy
- Building Internet Firewalls, 1.4.1.1. A firewall is a focus for security
- Building Internet Firewalls, 11. Security Policies
- Practical UNIX & Internet Security, 1.2. What Is an Operating System?
- Practical UNIX & Internet Security, 2. Policies and Guidelines
- Practical UNIX & Internet Security, 2.5.3. Final Words: Risk Management Means Common Sense
- TCP/IP Network Administration, 12.1. Security Planning
- reviewing : Building Internet Firewalls, 11.1.1.5. Provision for reviews
- writing : TCP/IP Network Administration, 12.1.3. Writing a Security Policy
- Building Internet Firewalls, 11. Security Policies
- Building Internet Firewalls, 1.4.1.1. A firewall is a focus for security
- of POP
: Building Internet Firewalls, 8.1.2. Post Office Protocol
- practicing drills for : Building Internet Firewalls, 13.5.7. Doing Drills
- preventing workstation as gateway : sendmail, 20.2.2. Workstation Refuses to Act as a Mail Gateway
- for printers : TCP/IP Network Administration, 4.5.2. Print servers
- protecting backups
- practicing drills for : Building Internet Firewalls, 13.5.7. Doing Drills
- protocol, and proxying
: Building Internet Firewalls, 7.4.3. Protocol Security
- publications, list of : TCP/IP Network Administration, 12.8. Words to the Wise
- published resources on
- publications, list of : TCP/IP Network Administration, 12.8. Words to the Wise
- queuing everything
: sendmail, 34.8. Alphabetized Reference
- rejecting mail from certain sites : sendmail, 20.2.6. Reject Mail from Spamming or Mail-bombing Sites
- responding to breakins
- rejecting mail from certain sites : sendmail, 20.2.6. Reject Mail from Spamming or Mail-bombing Sites
- responding to incidents
: Building Internet Firewalls, 13. Responding to Security Incidents
- restricting logins : Practical UNIX & Internet Security, 8.3. Restricting Logins
- reviewing response strategies : Building Internet Firewalls, 13.4.8. Periodic Review of Plans
- .rhosts : (see .rhosts file)
- risks
- restricting logins : Practical UNIX & Internet Security, 8.3. Restricting Logins
- TCP/IP Network Administration, 4.1. Connected and Non-Connected Networks
- TCP/IP Network Administration, 4.2.2. Defining the Subnet Mask
- TCP/IP Network Administration, 5.3.1.1. Options
- TCP/IP Network Administration, 5.3.1.2. Pseudo-device
- TCP/IP Network Administration, 5.4. The Internet Daemon
- TCP/IP Network Administration, 9.1.2.1. The share command
- TCP/IP Network Administration, 13.2.1. Creating an FTP Server
- TCP/IP Network Administration, 4.2.2. Defining the Subnet Mask
- TCP/IP Network Administration, 4.1. Connected and Non-Connected Networks
- RunAsUser option
: sendmail, 34.8. Alphabetized Reference
- safe sendmail options : sendmail, 34.1.4. Options that Are Safe
- sendmail problems : Practical UNIX & Internet Security, 17.3.4.1. sendmail and security
- sendmail restricted shell : sendmail, 19.6. Alphabetized m4 Macros
- sendmail.cf and : sendmail, 22.4. The Configuration File
- Skipjack algorithm : Practical UNIX & Internet Security, 6.4.1. Summary of Private Key Systems
- SNMP
- safe sendmail options : sendmail, 34.1.4. Options that Are Safe
- software piracy
: Practical UNIX & Internet Security, 26.4.2.1. Software piracy and the SPA
- sources of information : TCP/IP Network Administration, 12.1.2.2. Use mailing lists to distribute information
- standards of : Practical UNIX & Internet Security, 2.4.2. Standards
- strategies for : Building Internet Firewalls, 3. Security Strategies
- SUID_ROOT_FILES_OK macro : sendmail, 18.8. Alphabetized Reference
- superuser problems : Practical UNIX & Internet Security, 4.2.1.5. The problem with the superuser
- system crashes
- sources of information : TCP/IP Network Administration, 12.1.2.2. Use mailing lists to distribute information
- TCP Wrapper
: Building Internet Firewalls, 5.8.3.1. Using the TCP Wrapper package to protect services
- terminal servers : Building Internet Firewalls, 10.6. Terminal Servers and Modem Pools
- through obscurity
- terminal servers : Building Internet Firewalls, 10.6. Terminal Servers and Modem Pools
- Building Internet Firewalls, 1.3.2. Security Through Obscurity
- Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity
- Practical UNIX & Internet Security, 2.5.3. Final Words: Risk Management Means Common Sense
- Practical UNIX & Internet Security, 8.8.9. Account Names Revisited: Using Aliases for Increased
- Practical UNIX & Internet Security, 18.2.4. Keep Your Scripts Secret!
- Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity
- Building Internet Firewalls, 1.3.2. Security Through Obscurity
- time information and
: Building Internet Firewalls, 8.13. Network Time Protocol (NTP)
- tools for : Practical UNIX & Internet Security, 11.1. Programmed Threats: Definitions
- Tripwire package
- tools for : Practical UNIX & Internet Security, 11.1. Programmed Threats: Definitions
- trusted users
: sendmail, 19.6. Alphabetized m4 Macros
- universal participation : Building Internet Firewalls, 3.6. Universal Participation
- UNIX and
- universal participation : Building Internet Firewalls, 3.6. Universal Participation
- user awareness of
- UUCP
: (see UUCP)
- weakest link
- weakness-finding tools
: Practical UNIX & Internet Security, 11.1.1. Security Tools
- when proxying is ineffective : Building Internet Firewalls, 7.8.2. Proxying Won't Secure the Service
- whois service : Building Internet Firewalls, 8.8.2. whois
- World Wide Web
- when proxying is ineffective : Building Internet Firewalls, 7.8.2. Proxying Won't Secure the Service
- X Window System
- X11 window system mechanisms : Building Internet Firewalls, 8.16. X11 Window System
- Building Internet Firewalls, 1.4. What Is an Internet Firewall?
- Security Emergency Response Team (SERT)
: Practical UNIX & Internet Security, F.3.4.4. Australia: Internet .au domain
- security file (UUCP) : Practical UNIX & Internet Security, 10.3.4. uucp Log Files
- security holes
- security file (UUCP) : Practical UNIX & Internet Security, 10.3.4. uucp Log Files
- Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity
- (see also back doors; threats)
- ftpd program : Practical UNIX & Internet Security, 6.5.2. Using Message Digests
- mailing list for : Practical UNIX & Internet Security, E.1.3.3. Bugtraq
- reporting : Practical UNIX & Internet Security, 2.5.1. Going Public
- ruusend in L.cmds file : Practical UNIX & Internet Security, 15.4.3. L.cmds: Providing Remote Command Execution
- SUID/SGID programs : Practical UNIX & Internet Security, 5.5.3.1. write: Example of a possible SUID/SGID security
- /usr/lib/preserve : Practical UNIX & Internet Security, 5.5.3.2. Another SUID example: IFS and the /usr/lib/preserve
- UUCP : Practical UNIX & Internet Security, 15.7. Early Security Problems with UUCP
- (see also back doors; threats)
- Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity
- sed scripts
: Practical UNIX & Internet Security, 11.1.4. Trojan Horses
- seeds, random number
- segments
- select system call
: Practical UNIX & Internet Security, 17.1.3. The /etc/inetd Program
- selecting delivery agents : (see rule set 0)
- selection lists : Practical UNIX & Internet Security, 18.2.3.1. Do not trust the user's browser!
- self-destruct sequences : Practical UNIX & Internet Security, 27.2.1. Hardware Bugs
- semicolon (;)
- selecting delivery agents : (see rule set 0)
- comment character
: TCP/IP Network Administration, C.3.1. Standard Resource Records
- ending gated configuration statements
- comment character
: TCP/IP Network Administration, C.3.1. Standard Resource Records
- semiprivileged users
: sendmail, 22.5. Permissions
- sender
- sendmail, 29.6.2. Selecting S= and R=
- (see also S= equate)
- address of
- (see also S= equate)
- sendmail, 6.3. The local Delivery Agent
- sendmail, 11.1. Flow of the Sender's Address
- sendmail, 23.4. Printing the Queue
- sendmail, 23.9. The qf File Internals
- sendmail, 31.10. Alphabetized Reference
- sendmail, 36.7. Alphabetized Reference
- TCP/IP Network Administration, 10.6.3. The Set Ruleset Command
- TCP/IP Network Administration, 10.8.1. Testing Rewrite Rules
- (see also $f macro; $g macro; rule set 1)
- default format of : sendmail, 31.10. Alphabetized Reference
- genericstable feature : sendmail, 19.6. Alphabetized m4 Macros
- hostname part : (see $s macro)
- rewriting : sendmail, 11.4.1. Rewrite the Lone Username
- testing with check_compat : sendmail, 29.10.4. The check_compat Rule Set
- sendmail, 11.1. Flow of the Sender's Address
- sendmail, 6.3. The local Delivery Agent
- check_mail rule set
: sendmail, 29.10.1. The check_mail Rule Set
- of envelope, logging : sendmail, 26.1.3.3. from= show envelope sender
- full name for
- of envelope, logging : sendmail, 26.1.3.3. from= show envelope sender
- headers for
: sendmail, 35.6.2. Sender Headers
- running sendmail as : sendmail, 36.7. Alphabetized Reference
- unknown : sendmail, 35.10. Alphabetized Reference
- running sendmail as : sendmail, 36.7. Alphabetized Reference
- sendmail, 29.6.2. Selecting S= and R=
- "Sender:" header line
: sendmail, 35.10. Alphabetized Reference
- SENDFILES= command
- sending messages
- sendmail
- Building Internet Firewalls, 2.1. Electronic Mail
- Building Internet Firewalls, 3.1. Least Privilege
- Building Internet Firewalls, 8.1.1.1. SMTP for
- Practical UNIX & Internet Security, 11.1.2. Back Doors and Trap Doors
- Practical UNIX & Internet Security, 11.5.2.5. .forward, .procmailrc
- Practical UNIX & Internet Security, 11.5.3.3. /usr/lib/aliases, /etc/aliases,
- Practical UNIX & Internet Security, 17.3.4. Simple Mail Transfer Protocol (SMTP) (TCP Port 25)
- Practical UNIX & Internet Security, 17.3.4.3. Improving the security of Berkeley sendmail V8
- Practical UNIX & Internet Security, 24.2.4.2. How to contact the system administrator of a computer
- TCP/IP Network Administration, UNIX Versions
- TCP/IP Network Administration, 4.5.3. Planning Your Mail System
- TCP/IP Network Administration, 10. sendmail
- TCP/IP Network Administration, E.2. The sendmail Command
- (see also mail)
- (see also SMTP)
- aliases
- Building Internet Firewalls, 3.1. Least Privilege
- classes, listed
- compiling
: TCP/IP Network Administration, E.1. Compiling sendmail
- (dis)advantages to : sendmail, 18.1. To Use or Not to Use
- exit values : sendmail, 36.5. sendmail's exit() Status
- .forward file : Practical UNIX & Internet Security, 24.4.1.6. Changes to startup files
- future of : sendmail, The Future
- history of
- (dis)advantages to : sendmail, 18.1. To Use or Not to Use
- installing and configuring
- internal macros, listed
: TCP/IP Network Administration, 10.5.2. The Define Macro Command
- location of : sendmail, 36.1. Alternative argv[0] Names
- logging to syslog : Practical UNIX & Internet Security, 17.3.4.3. Improving the security of Berkeley sendmail V8
- m4 diversions, reserved : sendmail, 19.1.4. m4 diversions
- mailer flags, listed : TCP/IP Network Administration, E.4.3. sendmail Mailer Flags
- Morris worm : Building Internet Firewalls, 8.1. Electronic Mail
- obtaining source code
- location of : sendmail, 36.1. Alternative argv[0] Names
- options
- pid for
: (see $p macro)
- readying for DNS : sendmail, 21.1.2. Make sendmail DNS Aware
- restricted shell : sendmail, 19.6. Alphabetized m4 Macros
- running as a daemon : TCP/IP Network Administration, 10.2. Running sendmail as a Daemon
- running manually : sendmail, 1.4. Run sendmail by Hand
- same Internet/NIS domain : Practical UNIX & Internet Security, 19.4.3. NIS Domains
- security problems with : Practical UNIX & Internet Security, 17.3.4.1. sendmail and security
- starting operating mode : sendmail, 31.10. Alphabetized Reference
- Sun Microsystem's enhancements to : sendmail, D. Sun Enhancements
- testing and debugging arguments : TCP/IP Network Administration, 10.8. Testing sendmail.cf
- tools reference : TCP/IP Network Administration, E. A sendmail Reference
- using key files in : TCP/IP Network Administration, 10.8.2. Using Key Files in sendmail
- using most recent release
- readying for DNS : sendmail, 21.1.2. Make sendmail DNS Aware
- version of
- Practical UNIX & Internet Security, 17.3.4.1. sendmail and security
- sendmail, UNIX and sendmail Versions
- sendmail, 5.2.1. Version
- sendmail, 18.2. Vendor Versus Compiling
- sendmail, 27.5. The V Configuration Command
- sendmail, 31.10. Alphabetized Reference
- sendmail, D.2. Backward Compatibility
- TCP/IP Network Administration, Preface
- improving Version 8 : Practical UNIX & Internet Security, 17.3.4.3. Improving the security of Berkeley sendmail V8
- sendmail, UNIX and sendmail Versions
- Practical UNIX & Internet Security, 17.3.4.1. sendmail and security
- Building Internet Firewalls, 2.1. Electronic Mail
- "savemail panic" message
: sendmail, 23.3.6. Savemail Panic
- sendmail startup script : TCP/IP Network Administration, 10.2. Running sendmail as a Daemon
- sendmail.cf configuration file
- sendmail startup script : TCP/IP Network Administration, 10.2. Running sendmail as a Daemon
- Practical UNIX & Internet Security, 17.3.4. Simple Mail Transfer Protocol (SMTP) (TCP Port 25)
- sendmail, 1.3.1. The Configuration File
- sendmail, 3.1. Role in the Filesystem
- sendmail, 5. The sendmail.cf File
- sendmail, 22.4. The Configuration File
- sendmail, 27. The Configuration File
- sendmail, 36.4.4. Fourth: Read the Configuration File
- TCP/IP Network Administration, 10.4. The sendmail.cf File
- TCP/IP Network Administration, 10.4.2. General sendmail.cf Structure
- commands
- sendmail, 1.3.1. The Configuration File
- define class command (C and F)
: TCP/IP Network Administration, 10.5.3. The Define Class Command
- define macro command (D) : TCP/IP Network Administration, 10.5.2. The Define Macro Command
- define mail headers command (H) : TCP/IP Network Administration, 10.5.7. Defining Mail Headers
- define mail precedence command (P) : TCP/IP Network Administration, 10.5.6. Defining Mail Precedence
- define mailers command (M) : TCP/IP Network Administration, 10.5.8. Defining Mailers
- define trusted users command (T) : TCP/IP Network Administration, 10.5.5. Defining Trusted Users
- defining macros in : sendmail, 31.3. Configuration File Definitions
- freezing : sendmail, 36.7. Alphabetized Reference
- installing : sendmail, 15.6. Install the client.cf File
- location of : sendmail, 36.7. Alphabetized Reference
- modifying
- define macro command (D) : TCP/IP Network Administration, 10.5.2. The Define Macro Command
- options and flags
- pathname for
: sendmail, 18.8. Alphabetized Reference
- rewrite rules (R, S, and K commands)
- rule-testing mode and
: sendmail, 38.2. Configuration Lines
- sample of, locating : TCP/IP Network Administration, 10.4.1. Locating a Sample sendmail.cf File
- set option command (O) : TCP/IP Network Administration, 10.5.4. The Set Option Command
- structure of : TCP/IP Network Administration, 10.4.2. General sendmail.cf Structure
- testing
- sample of, locating : TCP/IP Network Administration, 10.4.1. Locating a Sample sendmail.cf File
- troubleshooting
: sendmail, 27.6. Pitfalls
- version level command (V) : TCP/IP Network Administration, 10.5.1. The Version Level Command
- Practical UNIX & Internet Security, 17.3.4. Simple Mail Transfer Protocol (SMTP) (TCP Port 25)
- sendmail.ct file
: sendmail, 19.6. Alphabetized m4 Macros
- sendmail.cw file : sendmail, 19.6. Alphabetized m4 Macros
- sendmail.pid file, pathname for : sendmail, 18.8. Alphabetized Reference
- sendmail.st file : sendmail, 26.2.1. The sendmail.st File
- sendmail.tar file : TCP/IP Network Administration, 10.4.1. Locating a Sample sendmail.cf File
- sendmailvars file : sendmail, D.4. L and G Configuration Commands
- "sendmailvars:" header line : sendmail, D.4. L and G Configuration Commands
- SendMimeErrors (j) option : sendmail, 34.8. Alphabetized Reference
- sensors : (see detectors)
- separation of duties : Practical UNIX & Internet Security, 13.2.5. Least Privilege and Separation of Duties
- sequence database class : sendmail, 33.8. Alphabetized Reference
- Sequence Number field : TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- sequence of commands : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- serial
- sendmail.cw file : sendmail, 19.6. Alphabetized m4 Macros
- communications packages
: TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections
- devices, adding manually : TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections
- interfaces
- devices, adding manually : TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections
- lines
- load balancing
: TCP/IP Network Administration, 5.2. Linux Kernel Configuration
- multiple, using simultaneously : TCP/IP Network Administration, 5.2. Linux Kernel Configuration
- load balancing
: TCP/IP Network Administration, 5.2. Linux Kernel Configuration
- protocols
- communications packages
: TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections
- Serial Line Internet Protocol (SLIP)
: Practical UNIX & Internet Security, 14.5. Modems and UNIX
- Serial Line IP (SLIP)
- Practical UNIX & Internet Security, 14.5. Modems and UNIX
- Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
- TCP/IP Network Administration, 1.7. Application Layer
- TCP/IP Network Administration, 5.2. Linux Kernel Configuration
- TCP/IP Network Administration, 5.3.1.2. Pseudo-device
- TCP/IP Network Administration, 6.2.1. The Serial Protocols
- (see also PLIP (Parallel Line IP))
- END character : TCP/IP Network Administration, 6.2.1. The Serial Protocols
- ESC character : TCP/IP Network Administration, 6.2.1. The Serial Protocols
- installing : TCP/IP Network Administration, 6.4. Installing SLIP
- server configuration : TCP/IP Network Administration, 6.4.3. SLIP Server Configuration
- Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
- Practical UNIX & Internet Security, 14.5. Modems and UNIX
- serial numbers, logging
: Practical UNIX & Internet Security, 10.7.1.2. Informational material
- SERT (Security Emergency Response Team) : Practical UNIX & Internet Security, F.3.4.4. Australia: Internet .au domain
- server-side includes
- SERT (Security Emergency Response Team) : Practical UNIX & Internet Security, F.3.4.4. Australia: Internet .au domain
- servers
- Practical UNIX & Internet Security, 16.2.5. Clients and Servers
- Practical UNIX & Internet Security, 17.1. Understanding UNIX Internet Servers
- Practical UNIX & Internet Security, 17.1.3. The /etc/inetd Program
- TCP/IP Network Administration, 1.7. Application Layer
- (see also remote, servers)
- Archie, running : Building Internet Firewalls, 8.7.3.4. Running an Archie server
- backing up : Practical UNIX & Internet Security, 7.2.2. Small Network of Workstations and a Server
- caching servers
- Practical UNIX & Internet Security, 17.1. Understanding UNIX Internet Servers
- checklist for bringing up
: Practical UNIX & Internet Security, 17.4. Security Implications of Network Services
- command : TCP/IP Network Administration, 8.4. Using nslookup
- configuration statement : TCP/IP Network Administration, B.8.10. The routerdiscovery Statement
- controlling access to : Practical UNIX & Internet Security, 17.2. Controlling Access to Servers
- DNS
- command : TCP/IP Network Administration, 8.4. Using nslookup
- for internal hosts
: Building Internet Firewalls, 8.10.5.2. Set up a real DNS
- setting up fake : Building Internet Firewalls, 8.10.5.1. Set up a `fake'
- for internal hosts
: Building Internet Firewalls, 8.10.5.2. Set up a real DNS
- ftp
: (see FTP)
- http : (see http server)
- load shedding : Practical UNIX & Internet Security, 23.3. Tips on Writing Network Programs
- local : sendmail, 19.6. Alphabetized m4 Macros
- master/slave
- http : (see http server)
- multiple
: TCP/IP Network Administration, 9.1.4. NFS Automounter
- name servers : sendmail, 21.1. Overview
- NIS+, security levels of : Practical UNIX & Internet Security, 19.5.5. NIS+ Limitations
- offsite : sendmail, 21.5.2. Offsite Servers
- overloading with requests : Practical UNIX & Internet Security, 25.3.1. Service Overloading
- program, pathname of : TCP/IP Network Administration, 5.4. The Internet Daemon
- proxy : (see proxy servers/services)
- routed : Building Internet Firewalls, 5.8.2.4. Which services should you disable?
- setting up for FTP
- name servers : sendmail, 21.1. Overview
- web
: (see web servers)
- WN : Practical UNIX & Internet Security, 18.3. Controlling Access to Files on Your Server
- Xauthority : Practical UNIX & Internet Security, 17.3.21.4. Using Xauthority magic cookies
- WN : Practical UNIX & Internet Security, 18.3. Controlling Access to Files on Your Server
- Practical UNIX & Internet Security, 16.2.5. Clients and Servers
- services
: (see network services)
- service-list : TCP/IP Network Administration, 12.5.1.1. tcpd access control files
- services file
- service-list : TCP/IP Network Administration, 12.5.1.1. tcpd access control files
- Practical UNIX & Internet Security, 17.1.1. The /etc/services File
- TCP/IP Network Administration, 5.4. The Internet Daemon
- TCP/IP Network Administration, 9.3. Network Information Service
- TCP/IP Network Administration, 9.4. A BOOTP Server
- TCP/IP Network Administration, 9.7.1. POP Server
- TCP/IP Network Administration, 9.7.2. IMAP Server
- TCP/IP Network Administration, 5.4. The Internet Daemon
- Practical UNIX & Internet Security, 17.1.1. The /etc/services File
- services host
: Building Internet Firewalls, 9.2. Screened Host Architecture
- Services table (NIS+) : Practical UNIX & Internet Security, 19.5.3. NIS+ Tables
- ServiceSwitchFile option
- Services table (NIS+) : Practical UNIX & Internet Security, 19.5.3. NIS+ Tables
- SESAME (Secure European System for Applications in a Multivendor Environment)
: Practical UNIX & Internet Security, 19.7.2. SESAME
- session
- hijacking
: Practical UNIX & Internet Security, 17.3.3. TELNET (TCP Port 23)
- IDs
- keys
- hijacking
: Practical UNIX & Internet Security, 17.3.3. TELNET (TCP Port 23)
- Session Layer
: TCP/IP Network Administration, 1.2. A Data Communications Model
- set debug command : TCP/IP Network Administration, 8.4. Using nslookup
- set domain command : TCP/IP Network Administration, 8.4. Using nslookup
- set ruleset (S) command : TCP/IP Network Administration, 10.6.3. The Set Ruleset Command
- set type command : TCP/IP Network Administration, 11.6.4. dig: An Alternative to nslookup
- seteuid, setreuid routines : sendmail, 22.1.1. Test seteuid and setreuid
- setgid capability
- set debug command : TCP/IP Network Administration, 8.4. Using nslookup
- setpgrp function
: Practical UNIX & Internet Security, C.1.3.4. Process groups and sessions
- setrlimit function : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- setsid function : Practical UNIX & Internet Security, C.1.3.4. Process groups and sessions
- setuid
- setrlimit function : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- setuid file
: Practical UNIX & Internet Security, 4.3.1. Real and Effective UIDs
- SevenBitInput (7) option : sendmail, 34.8. Alphabetized Reference
- severity level, warning
- SevenBitInput (7) option : sendmail, 34.8. Alphabetized Reference
- SGID bit
- Practical UNIX & Internet Security, 5.5.1. SUID, SGID, and Sticky Bits
- Practical UNIX & Internet Security, 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory
- (see also SUID/SGID programs)
- clearing with chown : Practical UNIX & Internet Security, 5.7. chown: Changing a File's Owner
- on directories : Practical UNIX & Internet Security, 5.5.6. SGID and Sticky Bits on Directories
- on files : Practical UNIX & Internet Security, 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory
- Practical UNIX & Internet Security, 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory
- Practical UNIX & Internet Security, 5.5.1. SUID, SGID, and Sticky Bits
- SGID files
: Practical UNIX & Internet Security, B.3.2.2. SGID files
- sh (Bourne shell)
- SHA (Secure Hash Algorithm)
- shadow file
- shadow passwords
- Shamir, Adi
- shar format file
: Practical UNIX & Internet Security, 11.1.4. Trojan Horses
- share command
- shareware
: Practical UNIX & Internet Security, 27.2.2. Viruses on the Distribution Disk
- sharing
- directories
: TCP/IP Network Administration, 9.1. The Network File System
- filesystems : TCP/IP Network Administration, 9.1.2. Sharing Filesystems
- directories
: TCP/IP Network Administration, 9.1. The Network File System
- sharp sign (#) : Practical UNIX & Internet Security, 6.5.1. Message Digests
- for comments
- sendmail, 5.1. Overview
- sendmail, 5.2.2. Comments
- sendmail, 27.2. Comments
- sendmail, 38.2. Configuration Lines
- TCP/IP Network Administration, 3.2. The Host Table
- TCP/IP Network Administration, 5.4. The Internet Daemon
- TCP/IP Network Administration, 7.7.1.1. A host configuration
- TCP/IP Network Administration, 9.1.4. NFS Automounter
- TCP/IP Network Administration, 9.2.1. The printcap File
- TCP/IP Network Administration, 9.4. A BOOTP Server
- TCP/IP Network Administration, A.1.1. The dip Script File
- TCP/IP Network Administration, D.3. The dhcpd.conf Configuration File
- sendmail, 5.2.2. Comments
- sendmail, 5.1. Overview
- disabling services with
: Practical UNIX & Internet Security, 17.3. Primary UNIX Network Services
- in :include: lists : sendmail, 25.2.1. Comments in :include: Lists
- lines in sendmail.cf : sendmail, 3.1. Role in the Filesystem
- in m4 files : sendmail, 19.5. Pitfalls
- in :include: lists : sendmail, 25.2.1. Comments in :include: Lists
- shell escapes
- shell scripts
- shells
- Practical UNIX & Internet Security, 1.2. What Is an Operating System?
- Practical UNIX & Internet Security, 3.2.1. The /etc/passwd File
- Practical UNIX & Internet Security, 11.1.4. Trojan Horses
- Practical UNIX & Internet Security, 11.5.1. Shell Features
- Practical UNIX & Internet Security, 11.5.1.4. Filename attacks
- Practical UNIX & Internet Security, C.2. Creating Processes
- Practical UNIX & Internet Security, C.5.3. Running the User's Shell
- changing
- Practical UNIX & Internet Security, 3.2.1. The /etc/passwd File
- history files
: Practical UNIX & Internet Security, 10.4.1. Shell History
- one-command accounts : Practical UNIX & Internet Security, 8.1.3. Accounts That Run a Single Command
- restricted (rsh, ksh)
- one-command accounts : Practical UNIX & Internet Security, 8.1.3. Accounts That Run a Single Command
- UUCP : (see uucico program)
- Practical UNIX & Internet Security, 1.2. What Is an Operating System?
- shells file
- Shimomura, Tsutomu
: Practical UNIX & Internet Security, 23.3. Tips on Writing Network Programs
- shoulder surfing
- show queue mode
: sendmail, 4.1.2. Show Queue Mode (-bp)
- showmount command
- showq command (SMTP)
: sendmail, 22.3.1. SMTP debug
- shredders : Practical UNIX & Internet Security, 12.3.3. Other Media
- SHTTP : (see Secure HTTP)
- shutdowns and wtmp file : Practical UNIX & Internet Security, 10.1.3. last Program
- shutting down
- shredders : Practical UNIX & Internet Security, 12.3.3. Other Media
- SIGHUP signal
- Practical UNIX & Internet Security, C.4. The kill Command
- TCP/IP Network Administration, 9.4. A BOOTP Server
- TCP/IP Network Administration, 11.6.3. Cache corruption
- TCP/IP Network Administration, A.2. The PPP Daemon
- TCP/IP Network Administration, A.2.1. Signal processing
- TCP/IP Network Administration, B.1.1. Signal Processing
- TCP/IP Network Administration, C.1.1. Signal Processing
- TCP/IP Network Administration, 9.4. A BOOTP Server
- Practical UNIX & Internet Security, C.4. The kill Command
- SIGINT signal
- SIGKILL signal
: Practical UNIX & Internet Security, C.4. The kill Command
- Signal Ground (SG) : Practical UNIX & Internet Security, 14.3. The RS-232 Serial Protocol
- signals
- Signal Ground (SG) : Practical UNIX & Internet Security, 14.3. The RS-232 Serial Protocol
- signatures, digital
- Practical UNIX & Internet Security, 6.4. Common Cryptographic Algorithms
- Practical UNIX & Internet Security, 6.5. Message Digests and Digital Signatures
- Practical UNIX & Internet Security, 6.5.5.2. Message authentication codes
- Practical UNIX & Internet Security, 9.2. Detecting Change
- Practical UNIX & Internet Security, 9.2.3. Checksums and Signatures
- TCP/IP Network Administration, 12.6. Encryption
- checksums
- Practical UNIX & Internet Security, 6.5. Message Digests and Digital Signatures
- Building Internet Firewalls, 5.8.5.3. About checksums for auditing
- Practical UNIX & Internet Security, 6.5.5.1. Checksums
- Practical UNIX & Internet Security, 9.2.3. Checksums and Signatures
- TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- TCP/IP Network Administration, 11.8. Protocol Case Study
- keeping secure : Building Internet Firewalls, 13.5.3. Keeping Secured Checksums
- recalculating
- Practical UNIX & Internet Security, 6.5.5.1. Checksums
- using Tripwire for : Building Internet Firewalls, 5.8.5.1. Auditing packages
- Building Internet Firewalls, 5.8.5.3. About checksums for auditing
- detached signatures
: Practical UNIX & Internet Security, 6.6.3.6. PGP detached signatures
- with PGP : Practical UNIX & Internet Security, 6.6.3.4. Adding a digital signature to an announcement
- Practical UNIX & Internet Security, 6.4. Common Cryptographic Algorithms
- SIGSTOP signal
: Practical UNIX & Internet Security, C.4. The kill Command
- SIGTERM signal
- silently discarding datagrams
: (see datagrams)
- SILO overflows : TCP/IP Network Administration, 6.1.5.4. Maximum transmission unit
- Simple Gateway Management Protocol (SGMP) : TCP/IP Network Administration, 11.9. Simple Network Management Protocol
- Simple Mail Transfer Protocol : (see SMTP)
- Simple Network Management Protocol : (see SNMP)
- single-character options : (see options, sendmail)
- single-purpose routers : Building Internet Firewalls, 6.8.2. It Can Be a Single-Purpose Router or
- single quotation marks (` and ') : sendmail, 19.1.1. m4 is greedy
- single threaded mail deliver : TCP/IP Network Administration, E.3.1. define
- single-user mode : Practical UNIX & Internet Security, C.5.1. Process #1: /etc/init
- SingleLineFromHeader option
- SILO overflows : TCP/IP Network Administration, 6.1.5.4. Maximum transmission unit
- SingleThreadDelivery option
- SITE macro (m4)
: sendmail, 19.6. Alphabetized m4 Macros
- SITECONFIG macro (m4) : sendmail, 19.4.6. UUCP
- size
- SITECONFIG macro (m4) : sendmail, 19.4.6. UUCP
- determining free disk space
: sendmail, 18.8. Alphabetized Reference
- df file : sendmail, 23.4. Printing the Queue
- guest messages : sendmail, 20.2.3. Limit the Size of Guest Messages
- messages
- df file : sendmail, 23.4. Printing the Queue
- prescan buffer
: sendmail, 18.8. Alphabetized Reference
- queue : sendmail, 18.8. Alphabetized Reference
- setting maxima : sendmail, 18.8. Alphabetized Reference
- syslog buffers : sendmail, 18.8. Alphabetized Reference
- queue : sendmail, 18.8. Alphabetized Reference
- determining free disk space
: sendmail, 18.8. Alphabetized Reference
- SIZE keyword (ESMTP)
: sendmail, 34.8. Alphabetized Reference
- size= equate (syslog output) : sendmail, 26.1.3.10. size= the size of the message
- Skipjack algorithm : Practical UNIX & Internet Security, 6.4.1. Summary of Private Key Systems
- Slackware 96 : TCP/IP Network Administration, 4.7. netconfig
- slash (/)
- size= equate (syslog output) : sendmail, 26.1.3.10. size= the size of the message
- / flag
: sendmail, 30.8. Alphabetized F= Flags
- character in alias
- IFS separator
: Practical UNIX & Internet Security, 11.5.1.2. IFS attacks
- root directory
- / flag
: sendmail, 30.8. Alphabetized F= Flags
- slattach command
: TCP/IP Network Administration, 6.4.1. slattach
- slave command : TCP/IP Network Administration, C.2. named.boot Configuration Commands
- Slave mode (uucico) : Practical UNIX & Internet Security, 15.1.4. How the UUCP Commands Work
- slave server
- slave command : TCP/IP Network Administration, C.2. named.boot Configuration Commands
- SLIP (Serial Line Internet Protocol)
- Practical UNIX & Internet Security, 14.5. Modems and UNIX
- Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
- TCP/IP Network Administration, 1.7. Application Layer
- TCP/IP Network Administration, 5.2. Linux Kernel Configuration
- TCP/IP Network Administration, 5.3.1.2. Pseudo-device
- TCP/IP Network Administration, 6.2.1. The Serial Protocols
- END character : TCP/IP Network Administration, 6.2.1. The Serial Protocols
- ESC character : TCP/IP Network Administration, 6.2.1. The Serial Protocols
- installing : TCP/IP Network Administration, 6.4. Installing SLIP
- server configuration : TCP/IP Network Administration, 6.4.3. SLIP Server Configuration
- Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
- Practical UNIX & Internet Security, 14.5. Modems and UNIX
- slocal program
: sendmail, 25.7.5.3. The slocal program
- slow convergence : TCP/IP Network Administration, 7.4.1.1. Running RIP with routed
- Smail3.x : sendmail, 18.1. To Use or Not to Use
- Small Business Community Nationwide (SBA CERT) : Practical UNIX & Internet Security, F.3.4.31. Small Business Association
- smap package
- slow convergence : TCP/IP Network Administration, 7.4.1.1. Running RIP with routed
- smart cards, firewalls
: Practical UNIX & Internet Security, 21.5. Special Considerations
- smart hosts
- SMART_HOST macro (m4)
- SMI (Structure of Management Information)
: TCP/IP Network Administration, 11.9. Simple Network Management Protocol
- smit tool : Practical UNIX & Internet Security, 8.8.2. Constraining Passwords
- smoke and smoking : Practical UNIX & Internet Security, 12.2.1.2. Smoke
- smrsh program
- smit tool : Practical UNIX & Internet Security, 8.8.2. Constraining Passwords
- SMTP (Simple Mail Transfer Protocol)
- Building Internet Firewalls, 2.1. Electronic Mail
- Building Internet Firewalls, 5.6. Selecting Services Provided by the
- Building Internet Firewalls, 7.5. Proxying Without a Proxy Server
- Building Internet Firewalls, 8.1.1. Simple Mail Transfer Protocol
- Practical UNIX & Internet Security, 17.3.4. Simple Mail Transfer Protocol (SMTP) (TCP Port 25)
- Practical UNIX & Internet Security, 17.3.4.3. Improving the security of Berkeley sendmail V8
- sendmail, 4.2. Verbose (-v)
- sendmail, 18.8. Alphabetized Reference
- TCP/IP Network Administration, 1.7. Application Layer
- TCP/IP Network Administration, 3.4.1. Simple Mail Transfer Protocol
- commands, listed : TCP/IP Network Administration, 3.4.1. Simple Mail Transfer Protocol
- configuring
- Building Internet Firewalls, 5.6. Selecting Services Provided by the
- firewalls and
: Building Internet Firewalls, 8.1.1.6. Configuring SMTP to
- in screened host architecture : Building Internet Firewalls, 9.2.1.3. SMTP
- in screened subnet architecture : Building Internet Firewalls, 9.1.1.3. SMTP
- in screened host architecture : Building Internet Firewalls, 9.2.1.3. SMTP
- firewalls and
: Building Internet Firewalls, 8.1.1.6. Configuring SMTP to
- EHLO command
- ESMTP (Extended SMTP)
- ETRN command
: sendmail, 23.6.2.4. Process the queue via ESMTP ETRN
- EXPN command
- Extended
: (see ESMTP)
- forging mail with : sendmail, 22.7.2. Forging with SMTP
- greeting message : sendmail, 31.10. Alphabetized Reference
- HELO command
- forging mail with : sendmail, 22.7.2. Forging with SMTP
- incoming connection rate
: sendmail, 34.8. Alphabetized Reference
- MAIL command
- multiple connections
: sendmail, 34.8. Alphabetized Reference
- multiple timeouts : sendmail, 34.8. Alphabetized Reference
- RCPT command
- multiple timeouts : sendmail, 34.8. Alphabetized Reference
- refusing on high load
: sendmail, 34.8. Alphabetized Reference
- running on stdin : sendmail, 36.7. Alphabetized Reference
- sendmail and : TCP/IP Network Administration, 10.1. sendmail's Function
- service extensions to : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
- SMTP probes : sendmail, 22.3. SMTP Probes
- standardizing on : TCP/IP Network Administration, 4.5.3. Planning Your Mail System
- status codes : sendmail, B.1. Status file lines
- for UNIX : (see Sendmail)
- VRFY command
- running on stdin : sendmail, 36.7. Alphabetized Reference
- Building Internet Firewalls, 2.1. Electronic Mail
- smtpd daemon
: sendmail, 36.1.5. smtpd
- SMTPDEBUG macro
- SmtpGreetingMessage option
- SMTPLINELIM macro
: sendmail, 18.8. Alphabetized Reference
- SNA (System Network Architecture) : Practical UNIX & Internet Security, 16.4.2. SNA
- snapshots, system
- SNA (System Network Architecture) : Practical UNIX & Internet Security, 16.4.2. SNA
- SNEFRU algorithm
: Practical UNIX & Internet Security, 6.5.4.4. SNEFRU
- sniffing
- Building Internet Firewalls, 1.2.1.3. Information Theft
- Building Internet Firewalls, 10.1.2. Packet Sniffing
- Building Internet Firewalls, 10.3.1. One-Time Passwords
- Practical UNIX & Internet Security, 1.4.3. Add-On Functionality Breeds Problems
- Practical UNIX & Internet Security, 3. Users and Passwords
- Practical UNIX & Internet Security, 8.7. One-Time Passwords
- Practical UNIX & Internet Security, 17.3.3. TELNET (TCP Port 23)
- (see also eavesdropping)
- network : Practical UNIX & Internet Security, 16.3. IP Security
- packet
- Building Internet Firewalls, 10.1.2. Packet Sniffing
- Building Internet Firewalls, 1.2.1.3. Information Theft
- SNK-004 card, TIS FWTK
: Building Internet Firewalls, 10.3.3. Challenge-Response Schemes
- SNMP (Simple Network Management Protocol)
- Building Internet Firewalls, 2.10. Network Management Services
- Practical UNIX & Internet Security, 17.3.15. Simple Network Management Protocol (SNMP) (UDP Ports
- TCP/IP Network Administration, 11.9. Simple Network Management Protocol
- configuring : Building Internet Firewalls, 8.12.1. Simple Network Management
- statement (in gated) : TCP/IP Network Administration, B.8.7. The snmp Statement
- Practical UNIX & Internet Security, 17.3.15. Simple Network Management Protocol (SNMP) (UDP Ports
- Building Internet Firewalls, 2.10. Network Management Services
- snoop
- snuffle program
: Building Internet Firewalls, 5.8.2.2. How to disable services
- SOA records
- sendmail, 15.3. MX Records
- TCP/IP Network Administration, 8.3.2. Standard Resource Records
- TCP/IP Network Administration, 8.3.4. The named.local File
- TCP/IP Network Administration, 8.3.5. The Reverse Domain File
- TCP/IP Network Administration, 8.3.6. The named.hosts File
- TCP/IP Network Administration, 11.6.1. Some systems work, others don't
- TCP/IP Network Administration, C.3.1.1. Start of Authority record
- TCP/IP Network Administration, 8.3.2. Standard Resource Records
- sendmail, 15.3. MX Records
- socket
- SOCKS package
- Building Internet Firewalls, 7.6. Using SOCKS for
- Building Internet Firewalls, B.4.2. SOCKS
- Practical UNIX & Internet Security, E.4.8. SOCKS
- TCP/IP Network Administration, 12.7.1. Functions of the firewall
- (see proxy servers/services)
- functions : Building Internet Firewalls, 7.6. Using SOCKS for
- HTTP proxying on
- Building Internet Firewalls, B.4.2. SOCKS
- in screened subnet architecture : Building Internet Firewalls, 9.1.1.5. HTTP
- modified finger service : Building Internet Firewalls, 8.8.1.2. Proxying characteristics of finger
- Building Internet Firewalls, 7.6. Using SOCKS for
- soft disk quotas
: Practical UNIX & Internet Security, 25.2.2.5. Using quotas
- software
- to automatically monitor the system
: Building Internet Firewalls, 5.9.2. Consider Writing Software to Automate Monitoring
- for backups
- for checking integrity
: Practical UNIX & Internet Security, 19.5.5. NIS+ Limitations
- checking new
- consistency of
: Practical UNIX & Internet Security, 2.1. Planning Your Security Needs
- distributing : (see FTP)
- exporting : Practical UNIX & Internet Security, 26.4.1. Munitions Export
- failure of : Practical UNIX & Internet Security, 7.1.1.1. A taxonomy of computer failures
- hacker challenges : Practical UNIX & Internet Security, 27.2.4. Hacker Challenges
- installing on machine : Building Internet Firewalls, 5.8.4. Reconfiguring for Production
- keeping updated : TCP/IP Network Administration, 12.3.2. Keep Software Updated
- logic bombs : Practical UNIX & Internet Security, 11.1.3. Logic Bombs
- outdated, security problems with : TCP/IP Network Administration, 12.2. User Authentication
- patches for, logging : Practical UNIX & Internet Security, 10.7.2.2. Informational material
- patents : Practical UNIX & Internet Security, 6.7.1. Cryptography and the U.S. Patent System
- proxying
- distributing : (see FTP)
- quality of
- removing unnecessary
: TCP/IP Network Administration, 12.3.1. Remove Unnecessary Software
- router : (see routers and routing)
- stolen (pirated)
- router : (see routers and routing)
- stored via FTP
: Practical UNIX & Internet Security, 17.3.2.6. Setting up anonymous FTP with the standard UNIX FTP
- testing : Practical UNIX & Internet Security, 1.4.2. Software Quality
- vendor license agreements : Practical UNIX & Internet Security, 18.5.2. Trusting Your Software Vendor
- viruses
- testing : Practical UNIX & Internet Security, 1.4.2. Software Quality
- worms : Practical UNIX & Internet Security, 11.1.6. Worms
- to automatically monitor the system
: Building Internet Firewalls, 5.9.2. Consider Writing Software to Automate Monitoring
- software error
: sendmail, 36.5.7. EX_SOFTWARE An Internal Software Error
- Software Publishers Association (SPA) : Practical UNIX & Internet Security, 26.4.2.1. Software piracy and the SPA
- Software Security Response Team (SSRT) : Practical UNIX & Internet Security, F.3.4.9. DEC (Digital Equipment Corporation)
- Solaris systems
- Software Publishers Association (SPA) : Practical UNIX & Internet Security, 26.4.2.1. Software piracy and the SPA
- Practical UNIX & Internet Security, 1.3. History of UNIX
- Practical UNIX & Internet Security, 8.7.1. Integrating One-time Passwords with UNIX
- sendmail, 18.8. Alphabetized Reference
- sendmail, D. Sun Enhancements
- TCP/IP Network Administration, UNIX Versions
- TCP/IP Network Administration, 2.5. The Routing Table
- TCP/IP Network Administration, 2.7.1. Protocol Numbers
- TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
- TCP/IP Network Administration, 3.5.1. Reverse Address Resolution Protocol
- TCP/IP Network Administration, 5.1. Kernel Configuration
- TCP/IP Network Administration, 10.2. Running sendmail as a Daemon
- /etc/logindevperm : Practical UNIX & Internet Security, 17.3.21.1. /etc/fbtab and /etc/logindevperm
- ifconfig command on
- Practical UNIX & Internet Security, 8.7.1. Integrating One-time Passwords with UNIX
- Line Printer (LP) print service in
: TCP/IP Network Administration, 9.2.2. Solaris Line Printer Service
- process limit : Practical UNIX & Internet Security, 25.2.1.1. Too many processes
- remounting filesystems on : TCP/IP Network Administration, 9.1.3.2. The vfstab and fstab files
- Secure RPC time window : Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- sharing directories on : TCP/IP Network Administration, 9.1.2.1. The share command
- process limit : Practical UNIX & Internet Security, 25.2.1.1. Too many processes
- obtaining information about : TCP/IP Network Administration, 9.1.3. Mounting Remote Filesystems
- /var/adm/loginlog file
: Practical UNIX & Internet Security, 10.1.4. loginlog File
- wtmpx file : Practical UNIX & Internet Security, 10.1.2. utmp and wtmp Files
- Practical UNIX & Internet Security, 1.3. History of UNIX
- sorting by priority
: (see priority, message)
- sorting queue
- sendmail, 34.8. Alphabetized Reference
- (see also queue)
- sendmail, 34.8. Alphabetized Reference
- sortlist command, in resolv.conf
: TCP/IP Network Administration, 8.2.1. The Resolver Configuration File
- source address : Building Internet Firewalls, 6.6.1. Risks of Filtering by Source
- source code
- source address : Building Internet Firewalls, 6.6.1. Risks of Filtering by Source
- db library package
: sendmail, C.2. Get the Source
- keeping secret : Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity
- obtaining (sendmail)
- keeping secret : Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity
- db library package
: sendmail, C.2. Get the Source
- Source Code Control System (SCCS)
- source port
- Source Quench Message
: TCP/IP Network Administration, 1.5.2. Internet Control Message Protocol
- source routing
- sourcegateways
: TCP/IP Network Administration, B.8.2. The rip Statement
- SPA (Software Publishers Association) : Practical UNIX & Internet Security, 26.4.2.1. Software piracy and the SPA
- space : (see whitespace)
- Spaf's first principle : Practical UNIX & Internet Security, 2.4.4.5. Have authority commensurate with responsibility
- spams : sendmail, 20.2.6. Reject Mail from Spamming or Mail-bombing Sites
- special
- SPA (Software Publishers Association) : Practical UNIX & Internet Security, 26.4.2.1. Software piracy and the SPA
- aliases
: sendmail, 24.4. Special Aliases
- characters
- delivery precedence
: sendmail, 14.4. Precedence
- operators : (see wildcard operators)
- rule sets : (see rule sets)
- operators : (see wildcard operators)
- aliases
: sendmail, 24.4. Special Aliases
- speed, processing
: Building Internet Firewalls, 5.3.2. How Fast a Machine?
- spell command, UNIX : Building Internet Firewalls, 5.8.5.3. About checksums for auditing
- SPF protocol
- spell command, UNIX : Building Internet Firewalls, 5.8.5.3. About checksums for auditing
- spies
- split horizon rule
: TCP/IP Network Administration, 7.4.1.1. Running RIP with routed
- spoofing
- Practical UNIX & Internet Security, 8.5.3.1. Trusted path
- Practical UNIX & Internet Security, 16.3. IP Security
- Practical UNIX & Internet Security, 17.5. Monitoring Your Network with netstat
- Practical UNIX & Internet Security, 19.4.4.4. Spoofing RPC
- Practical UNIX & Internet Security, 19.4.4.5. Spoofing NIS
- addresses : (see addresses)
- Practical UNIX & Internet Security, 16.3. IP Security
- Practical UNIX & Internet Security, 8.5.3.1. Trusted path
- spool file
: Practical UNIX & Internet Security, 15.1.4. How the UUCP Commands Work
- spoolers, printer : Practical UNIX & Internet Security, 12.3.4.1. Printer buffers
- sprinkler systems
- spoolers, printer : Practical UNIX & Internet Security, 12.3.4.1. Printer buffers
- Sprint response team
: Practical UNIX & Internet Security, F.3.4.32. Sprint Response Team
- sprintf function
- SPT_TYPE macro
: sendmail, 18.8. Alphabetized Reference
- src directory : sendmail, 2.3. What's What in src
- sscanf function : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- ssh (secure shell) : TCP/IP Network Administration, 12.2.6. Secure Shell
- .ssh/identity.pub : TCP/IP Network Administration, 12.2.6. Secure Shell
- .ssh_known_hosts file : TCP/IP Network Administration, 12.2.6. Secure Shell
- ssh-keygen : TCP/IP Network Administration, 12.2.6. Secure Shell
- SSL (Secure Socket Layer) : Practical UNIX & Internet Security, 18.4.1. Eavesdropping Over the Wire
- SSRT (Software Security Response Team) : Practical UNIX & Internet Security, F.3.4.9. DEC (Digital Equipment Corporation)
- stab database class : sendmail, 33.8. Alphabetized Reference
- stacks : (see protocols, stack)
- staff limitations : TCP/IP Network Administration, 4.2.2. Defining the Subnet Mask
- Stallman, Richard : Practical UNIX & Internet Security, 1. Introduction
- standard resource records (RRs)
- src directory : sendmail, 2.3. What's What in src
- start bit
- Start of Authority
: (see SOA records)
- startup command : Practical UNIX & Internet Security, 10.2.1. Accounting with System V UNIX
- startup operating mode
: sendmail, 31.10. Alphabetized Reference
- startup script
- stat function
: Practical UNIX & Internet Security, 5.4. Using Directory Permissions
- stat= equate (syslog output) : sendmail, 26.1.3.11. stat= status of delivery
- state law enforcement : Practical UNIX & Internet Security, 26.2.1. The Local Option
- stateless : Practical UNIX & Internet Security, 20.1.4.3. Connectionless and stateless
- static
- stat= equate (syslog output) : sendmail, 26.1.3.11. stat= status of delivery
- assignment of addresses : TCP/IP Network Administration, 4.2.1.1. Assigning host addresses
- circumstances favoring : TCP/IP Network Administration, 4.3. Planning Routing
- electricity
: Practical UNIX & Internet Security, 12.2.1.8. Electrical noise
- links : Practical UNIX & Internet Security, 23.4. Tips on Writing SUID/SGID Programs
- routing
- links : Practical UNIX & Internet Security, 23.4. Tips on Writing SUID/SGID Programs
- TCP/IP Network Administration, 4.3. Planning Routing
- TCP/IP Network Administration, 7.1. Common Routing Configurations
- TCP/IP Network Administration, 12.7.2. Routing control
- adding routes : TCP/IP Network Administration, 7.3.1. Adding Static Routes
- building tale for : TCP/IP Network Administration, 7.3. Building a Static Routing Table
- installing routes at startup : TCP/IP Network Administration, 7.3.1.1. Installing static routes at startup
- TCP/IP Network Administration, 7.1. Common Routing Configurations
- TCP/IP Network Administration, 4.3. Planning Routing
- statements (in gated) : TCP/IP Network Administration, B.9. static Statements
- statistics : sendmail, 26.2. Statistics
- cron program and
: sendmail, 26.2.3. Using cron for Daily and Weekly Statistics
- specifying file for : sendmail, 34.8. Alphabetized Reference
- StatusFile option and : sendmail, 22.4.5. The S Option and the Statistics File
- syslog utility and : sendmail, 26.1.4. Gathering Statistics from syslog
- specifying file for : sendmail, 34.8. Alphabetized Reference
- cron program and
: sendmail, 26.2.3. Using cron for Daily and Weekly Statistics
- status, sendmail
: sendmail, B.1. Status file lines
- "Status:" header line : sendmail, B.1. Status file lines
- status monitor daemon : TCP/IP Network Administration, 9.1.1. NFS Daemons
- StatusFile (S) option
- "Status:" header line : sendmail, B.1. Status file lines
- stdin, running SMTP on
: sendmail, 36.7. Alphabetized Reference
- STDIR= directive : sendmail, 18.4.8. STDIR=
- Steele, Guy L. : Practical UNIX & Internet Security, 1. Introduction
- sticky bits
- STDIR= directive : sendmail, 18.4.8. STDIR=
- stickyhost feature
: sendmail, 19.6. Alphabetized m4 Macros
- stolen property : (see theft)
- stop bit
- stolen property : (see theft)
- storage
- store-and-forward protocols
- strcpy routine
: Practical UNIX & Internet Security, 23.1.1. The Lesson of the Internet Worm
- streadd function : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- stream
- streadd function : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- strecpy function
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- strength, cryptographic : Practical UNIX & Internet Security, 6.2.3. Cryptographic Strength
- string command
: Practical UNIX & Internet Security, 12.3.5.2. X screen savers
- string-type arguments : sendmail, 34.5. Option Argument Types
- string values, in printcap parameters : TCP/IP Network Administration, 9.2.1. The printcap File
- strings command : sendmail, 33.1. Enable at Compile Time
- stripping
- string-type arguments : sendmail, 34.5. Option Argument Types
- character high bit
: sendmail, 30.8. Alphabetized F= Flags
- comments from headers : sendmail, 30.8. Alphabetized F= Flags
- newlines from "From:" headers : sendmail, 34.8. Alphabetized Reference
- quotation marks
- comments from headers : sendmail, 30.8. Alphabetized F= Flags
- character high bit
: sendmail, 30.8. Alphabetized F= Flags
- strtrns function
: Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- Structure of Management Information (SMI) : TCP/IP Network Administration, 11.9. Simple Network Management Protocol
- stub areas
- Structure of Management Information (SMI) : TCP/IP Network Administration, 11.9. Simple Network Management Protocol
- stuck locks
: sendmail, 23.2.3.3. Locks can get stuck
- su command
- Practical UNIX & Internet Security, 4.2.1.2. Superuser is not for casual use
- Practical UNIX & Internet Security, 4.3. su: Changing Who You Claim to Be
- Practical UNIX & Internet Security, 4.3.8. Other Uses of su
- becoming superuser : Practical UNIX & Internet Security, 4.3.4. Becoming the Superuser
- log of failed attempts : Practical UNIX & Internet Security, 4.3.7. The Bad su Log
- sulog file
- Practical UNIX & Internet Security, 4.3. su: Changing Who You Claim to Be
- utmp and wtmp files and : Practical UNIX & Internet Security, 10.1.2.1. su commandutmp and wtmp files andsu
- Practical UNIX & Internet Security, 4.2.1.2. Superuser is not for casual use
- subdomain name
- subdomains
- "Subject:" header line
- subnets
- Building Internet Firewalls, C.9.2. Subnets
- Practical UNIX & Internet Security, 16.2.1.2. Classical network addresses
- TCP/IP Network Administration, 2.3. Subnets
- TCP/IP Network Administration, 3.3.2. Creating Domains and Subdomains
- administration of : TCP/IP Network Administration, 12.1.2.1. Use subnets to distribute control
- architecture, screened
- Practical UNIX & Internet Security, 16.2.1.2. Classical network addresses
- enterprise
: (see enterprise)
- for distributing control : TCP/IP Network Administration, 12.1.2.1. Use subnets to distribute control
- mask (sm)
- for distributing control : TCP/IP Network Administration, 12.1.2.1. Use subnets to distribute control
- TCP/IP Network Administration, 2.3. Subnets
- TCP/IP Network Administration, 4. Getting Started
- TCP/IP Network Administration, 6.1. The ifconfig Command
- assigning
- TCP/IP Network Administration, 4. Getting Started
- defining
: TCP/IP Network Administration, 4.2.2. Defining the Subnet Mask
- misconfigured : TCP/IP Network Administration, 11.4.1. Troubleshooting with the ifconfig Command
- parameter : TCP/IP Network Administration, 9.4. A BOOTP Server
- misconfigured : TCP/IP Network Administration, 11.4.1. Troubleshooting with the ifconfig Command
- TCP/IP Network Administration, 2.3. Subnets
- movement among
: TCP/IP Network Administration, 3.6.1. Dynamic Host Configuration Protocol
- reasons for : TCP/IP Network Administration, 4.2.2. Defining the Subnet Mask
- statements, in dhcpd : TCP/IP Network Administration, 9.5.1. dhcpd.conf
- reasons for : TCP/IP Network Administration, 4.2.2. Defining the Subnet Mask
- Building Internet Firewalls, C.9.2. Subnets
- subroutines, rules as
: sendmail, 28.6.4. Rewrite Through Another Rule Set: $>set
- subscribing : TCP/IP Network Administration, 13.5. Mailing Lists
- substitution (in encryption) : Practical UNIX & Internet Security, 6.1.2. Cryptography and Digital Computers
- subtypes : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
- success data, DSN delivery : sendmail, 30.5.2.1. The $@ dsn part
- suid root : (see root account/user)
- SUID/SGID programs
- subscribing : TCP/IP Network Administration, 13.5. Mailing Lists
- Practical UNIX & Internet Security, 4.3.1. Real and Effective UIDs
- Practical UNIX & Internet Security, 5.5. SUID
- Practical UNIX & Internet Security, 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory
- Practical UNIX & Internet Security, 23. Writing Secure SUID and Network Programs
- Practical UNIX & Internet Security, B.3. SUID and SGID Files
- back door via : Practical UNIX & Internet Security, 11.1.2. Back Doors and Trap Doors
- chown command and : Practical UNIX & Internet Security, 5.7. chown: Changing a File's Owner
- chroot call and : Practical UNIX & Internet Security, 8.1.5.2. Checking new software
- created by intruders : Practical UNIX & Internet Security, 24.4.1.3. New SUID and SGID files
- on directories : Practical UNIX & Internet Security, 5.5.6. SGID and Sticky Bits on Directories
- disabling (turning off) : Practical UNIX & Internet Security, 5.5.5. Turning Off SUID and SGID in Mounted Filesystems
- finding all files
- Practical UNIX & Internet Security, 5.5. SUID
- shell scripts
- uucp access
: Practical UNIX & Internet Security, 15.3. UUCP and Security
- writing : Practical UNIX & Internet Security, 23.4. Tips on Writing SUID/SGID Programs
- Practical UNIX & Internet Security, 4.3.1. Real and Effective UIDs
- SUID_ROOT_FILES_OK macro
: sendmail, 18.8. Alphabetized Reference
- suing : (see civil actions)
- sulog file
- suing : (see civil actions)
- sum command
- Sun Microsystems
- Practical UNIX & Internet Security, F.3.4.34. Sun Microsystems
- TCP/IP Network Administration, UNIX Versions
- TCP/IP Network Administration, 3.3.5. Network Information Service
- TCP/IP Network Administration, 3.7.1. File Sharing
- TCP/IP Network Administration, 9.3. Network Information Service
- TCP/IP Network Administration, 10.6.1. Pattern Matching
- enhancements to sendmail : sendmail, D. Sun Enhancements
- NIS : (see NIS)
- NIS+ on : (see NIS+)
- RPC : (see RPCs)
- vendor specification : sendmail, 27.5.1. The vendor
- TCP/IP Network Administration, UNIX Versions
- Practical UNIX & Internet Security, F.3.4.34. Sun Microsystems
- SUN-DES-1 authentication
: Practical UNIX & Internet Security, 17.3.21.3. The xhost facility
- SunOS operating system : Practical UNIX & Internet Security, 1.3. History of UNIX
- authdes_win variable
: Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- /etc/fbtab file : Practical UNIX & Internet Security, 17.3.21.1. /etc/fbtab and /etc/logindevperm
- TFTP sand : Practical UNIX & Internet Security, 17.3.7. Trivial File Transfer Protocol (TFTP) (UDP Port 69)
- trusted hosts and : Practical UNIX & Internet Security, 17.3.18.5. Searching for .rhosts files
- /etc/fbtab file : Practical UNIX & Internet Security, 17.3.21.1. /etc/fbtab and /etc/logindevperm
- authdes_win variable
: Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- superencryption
: Practical UNIX & Internet Security, 6.4.5. Improving the Security of DES
- supernetting : TCP/IP Network Administration, 2.2.2. Classless IP Addresses
- SuperSafe (s) option
- supernetting : TCP/IP Network Administration, 2.2.2. Classless IP Addresses
- superusers
- Practical UNIX & Internet Security, 4. Users, Groups, and the Superuser
- Practical UNIX & Internet Security, 4.2.1. The Superuser
- Practical UNIX & Internet Security, 4.2.1.5. The problem with the superuser
- (see also root account/user)
- becoming with su : Practical UNIX & Internet Security, 4.3.4. Becoming the Superuser
- changing passwords
- Practical UNIX & Internet Security, 4.2.1. The Superuser
- encryption and
: Practical UNIX & Internet Security, 6.2.4. Why Use Encryption with UNIX?
- logging attempts to become : (see sulog file)
- privileges
- logging attempts to become : (see sulog file)
- problems with
: Practical UNIX & Internet Security, 4.2.1.5. The problem with the superuser
- restrictions on : Practical UNIX & Internet Security, 4.2.1.4. What the superuser can't do
- TCB files : Practical UNIX & Internet Security, 8.5.3.2. Trusted computing base
- using passwd command : Practical UNIX & Internet Security, 3.5. Verifying Your New Password
- web server as : Practical UNIX & Internet Security, 18.2.1. The Server's UID
- restrictions on : Practical UNIX & Internet Security, 4.2.1.4. What the superuser can't do
- Practical UNIX & Internet Security, 4. Users, Groups, and the Superuser
- supporting Internet services
: (see network services)
- suppressing header lines : sendmail, 20.3. Alphabetized V8.8 Subroutines
- SURFnet : Practical UNIX & Internet Security, F.3.4.25. Netherlands: German government institutions
- surges : (see power surges)
- suspicious characters
- suppressing header lines : sendmail, 20.3. Alphabetized V8.8 Subroutines
- svc.conf file
: sendmail, 7.3.1. The hostname
- SVR4 (System V Release 4) : Practical UNIX & Internet Security, 1.3. History of UNIX
- swap partition
- SVR4 (System V Release 4) : Practical UNIX & Internet Security, 1.3. History of UNIX
- SWATCH program
- Building Internet Firewalls, 5.9.2. Consider Writing Software to Automate Monitoring
- Building Internet Firewalls, B.6.4. SWATCH
- Practical UNIX & Internet Security, 10.6. Swatch: A Log File Tool
- Practical UNIX & Internet Security, 10.6.2. The Swatch Configuration File
- Practical UNIX & Internet Security, E.4.9. Swatch
- Building Internet Firewalls, B.6.4. SWATCH
- Building Internet Firewalls, 5.9.2. Consider Writing Software to Automate Monitoring
- SWITCH
: Practical UNIX & Internet Security, F.3.4.35. SWITCH-connected sites
- switch database class : sendmail, 33.8. Alphabetized Reference
- switched services : sendmail, 34.8. Alphabetized Reference
- switches, packet
- switch database class : sendmail, 33.8. Alphabetized Reference
- Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
- Practical UNIX & Internet Security, 16.3. IP Security
- TCP/IP Network Administration, 1.5.1.1. The datagram
- TCP/IP Network Administration, 1.7. Application Layer
- (see also packets)
- asymmetric : TCP/IP Network Administration, 11.4.4. Subdividing an Ethernet
- Practical UNIX & Internet Security, 16.3. IP Security
- Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
- switches, command-line (sendmail)
- symbol table
: sendmail, 12.1.3. Class Macros in the LHS
- symbolic links and permissions
- symbolic name, delivery agent
: sendmail, 30.2. The Symbolic Name
- SymLinksIfOwnerMatch option : Practical UNIX & Internet Security, 18.3.2. Commands Within the <Directory>
- symmetric encryption : (see private-key cryptography)
- SYN (synchronize sequence numbers) bit
- SymLinksIfOwnerMatch option : Practical UNIX & Internet Security, 18.3.2. Commands Within the <Directory>
- SYN bit
: Practical UNIX & Internet Security, 16.2.4.2. TCP
- sync system call
- synchronization
: TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- synchronize sequence numbers (SYN) bit : TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- synchronous modems : (see modems)
- synchronous PPP, support for : TCP/IP Network Administration, 5.3.1.2. Pseudo-device
- sys (user) : Practical UNIX & Internet Security, 4.1. Users and Groups
- sys_errlist : sendmail, 18.5.3. Badly defined sys_errlist
- SYS_TYPE macro : sendmail, 18.8. Alphabetized Reference
- sysexits.h file
- synchronize sequence numbers (SYN) bit : TCP/IP Network Administration, 1.6.2. Transmission Control Protocol
- syslog
- Building Internet Firewalls, 5.8.1.4. Safeguard the system logs
- Practical UNIX & Internet Security, 4.3.7. The Bad su Log
- Practical UNIX & Internet Security, 10.5. The UNIX System Log (syslog) Facility
- Practical UNIX & Internet Security, 10.5.3.1. Beware false log entries
- Practical UNIX & Internet Security, 23.1.1. The Lesson of the Internet Worm
- (see also logs/logging)
- configuring : Building Internet Firewalls, 8.11. syslog
- example output from : Building Internet Firewalls, 12.2.2. What Should You Watch For?
- false log entries : Practical UNIX & Internet Security, 10.5.3.1. Beware false log entries
- SWATCH program with : Building Internet Firewalls, 5.9.2. Consider Writing Software to Automate Monitoring
- where to log
- Practical UNIX & Internet Security, 4.3.7. The Bad su Log
- Building Internet Firewalls, 5.8.1.4. Safeguard the system logs
- syslog file
: Practical UNIX & Internet Security, 17.3.4.3. Improving the security of Berkeley sendmail V8
- syslog.conf file
- SYSLOG_BUFSIZE macro
: sendmail, 18.8. Alphabetized Reference
- syslogd
- systat service
: Practical UNIX & Internet Security, 17.3.1. systat (TCP Port 11)
- system
- (see also networks and networking)
- (see also operating systems)
- administration : (see system administration)
- auditing activity on : Practical UNIX & Internet Security, 2.1. Planning Your Security Needs
- autonomous : Building Internet Firewalls, C.10. Internet Routing Architecture
- backing up critical files
- (see also operating systems)
- clock
: (see system clock)
- crashes, watching carefully : Building Internet Firewalls, 5.10.1. Watch Reboots Carefully
- customized : Building Internet Firewalls, 13.1.6. Restore and Recover
- database files : Practical UNIX & Internet Security, 1.2. What Is an Operating System?
- defense, diversity of : Building Internet Firewalls, 3.7. Diversity of Defense
- documenting after incident
- crashes, watching carefully : Building Internet Firewalls, 5.10.1. Watch Reboots Carefully
- failure of
: Building Internet Firewalls, 3.5. Fail-Safe Stance
- identity of : sendmail, 31.7.1. Macros and the System Identity
- keeping up-to-date : Building Internet Firewalls, 12.3.2. Keeping Your Systems Up To Date
- labeling and diagramming : Building Internet Firewalls, 13.5.2. Labeling and Diagraming Your System
- logging activity : (see logs/logging)
- monitoring
- identity of : sendmail, 31.7.1. Macros and the System Identity
- operating, testing reload of
: Building Internet Firewalls, 13.5.6. Testing the Reload of the Operating
- OSTYPE declaration
- overload attacks
: Practical UNIX & Internet Security, 25.2.1.2. System overload attacks
- performance : (see performance)
- rebuilding : Building Internet Firewalls, 13.1.6. Restore and Recover
- remote, commands on : Practical UNIX & Internet Security, 15.1.2. uux Command
- restoring after incident : Building Internet Firewalls, 13.1.6. Restore and Recover
- performance : (see performance)
- shutting down
: Building Internet Firewalls, 13.1.2. Disconnect or Shut Down, as
- summarizing usage per user : Practical UNIX & Internet Security, 25.2.2.2. quot command
- transfering files to other : Practical UNIX & Internet Security, 15.1.1. uucp Command
- summarizing usage per user : Practical UNIX & Internet Security, 25.2.2.2. quot command
- (see also networks and networking)
- system (in swatch program)
: Practical UNIX & Internet Security, 10.6.2. The Swatch Configuration File
- system administration
- Practical UNIX & Internet Security, 2.4.4.5. Have authority commensurate with responsibility
- TCP/IP Network Administration, 1.7. Application Layer
- TCP/IP Network Administration, 3.1. Names and Addresses
- avoiding conventional passwords
- TCP/IP Network Administration, 1.7. Application Layer
- breaking forward loops
: sendmail, 25.7.2. Forwarding Loops
- change monitoring : Practical UNIX & Internet Security, 9.3. A Final Note
- changing passwords
- change monitoring : Practical UNIX & Internet Security, 9.3. A Final Note
- cleaning up /tmp directory
: Practical UNIX & Internet Security, 25.2.4. /tmp Problems
- contacting administrator : Practical UNIX & Internet Security, 24.2.4.2. How to contact the system administrator of a computer
- controlling UUCP security : Practical UNIX & Internet Security, 15.3. UUCP and Security
- detached signatures (PGP) : Practical UNIX & Internet Security, 6.6.3.6. PGP detached signatures
- disabling finger system : Practical UNIX & Internet Security, 17.3.8.2. Disabling finger
- discovering intruders
- contacting administrator : Practical UNIX & Internet Security, 24.2.4.2. How to contact the system administrator of a computer
- dual universes and
: Practical UNIX & Internet Security, 5.9.1. Dual Universes
- errors by : Practical UNIX & Internet Security, 7.1.1.1. A taxonomy of computer failures
- finding largest files : Practical UNIX & Internet Security, 25.2.2.1. Disk-full attacks
- immutable files and : Practical UNIX & Internet Security, 9.1.1. Immutable and Append-Only Files
- locked accounts : Practical UNIX & Internet Security, 3.3. Entering Your Password
- logging : (see logs/logging)
- message authentication : Practical UNIX & Internet Security, 6.5.2. Using Message Digests
- monitoring phantom mail : Practical UNIX & Internet Security, 17.3.4.2. Using sendmail to receive email
- new passwords : Practical UNIX & Internet Security, 3.4. Changing Your Password
- read-only filesystems and : Practical UNIX & Internet Security, 9.1.2. Read-only Filesystems
- references on : Practical UNIX & Internet Security, D.1.11. UNIX Programming and System Administration
- removing automatic backups : Practical UNIX & Internet Security, 18.2.3.5. Beware stray CGI scripts
- responsibilities of administrators
- errors by : Practical UNIX & Internet Security, 7.1.1.1. A taxonomy of computer failures
- sanitizing media
: Practical UNIX & Internet Security, 12.3.2.3. Sanitize your media before disposal
- statistics : sendmail, 26.1.4. Gathering Statistics from syslog
- trusting : Practical UNIX & Internet Security, 27.3.2. Your System Administrator?
- weakness-finding tools : Practical UNIX & Internet Security, 11.1.1. Security Tools
- statistics : sendmail, 26.1.4. Gathering Statistics from syslog
- Practical UNIX & Internet Security, 2.4.4.5. Have authority commensurate with responsibility
- system call
: Practical UNIX & Internet Security, 5.1.7. File Permissions in Detail
- system clock
- changing
- for random seeds
: Practical UNIX & Internet Security, 23.8. Picking a Random Seed
- Secure RPC timestamp : Practical UNIX & Internet Security, 19.3.1.3. Setting the window
- System Dynamics cards
: Building Internet Firewalls, 10.3.2. Time-based Passwords
- system files
- system functions
- Practical UNIX & Internet Security, 5.5.3.2. Another SUID example: IFS and the /usr/lib/preserve
- Practical UNIX & Internet Security, 18.2.3.2. Testing is not enough!
- Practical UNIX & Internet Security, 18.2.3.3. Sending mail
- Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- checking arguments to : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
- Practical UNIX & Internet Security, 18.2.3.2. Testing is not enough!
- Practical UNIX & Internet Security, 5.5.3.2. Another SUID example: IFS and the /usr/lib/preserve
- System Network Architecture (SNA)
: Practical UNIX & Internet Security, 16.4.2. SNA
- System V UNIX : Practical UNIX & Internet Security, 1.3. History of UNIX
- accounting with
: Practical UNIX & Internet Security, 10.2.1. Accounting with System V UNIX
- chroot in : Practical UNIX & Internet Security, 8.1.5. Restricted Filesystem
- default umask value : Practical UNIX & Internet Security, 5.3. The umask
- groups and : Practical UNIX & Internet Security, 4.1.3.2. Groups and older AT&T UNIX
- inittab program : Practical UNIX & Internet Security, C.5.1. Process #1: /etc/init
- modems and : Practical UNIX & Internet Security, 14.5.1. Hooking Up a Modem to Your Computer
- passwords : Practical UNIX & Internet Security, 8.1.1. Accounts Without Passwords
- ps command with : Practical UNIX & Internet Security, C.1.2.1. Listing processes with systems derived from System
- random number generators : Practical UNIX & Internet Security, 23.7.3. drand48 ( ), lrand48 ( ), and mrand48 ( )
- recent login times : Practical UNIX & Internet Security, 10.1.1. lastlog File
- Release 4 (SVR4) : Practical UNIX & Internet Security, 1.3. History of UNIX
- restricted shells : Practical UNIX & Internet Security, 8.1.4.1. Restricted shells under System V UNIX
- SGI bit on files : Practical UNIX & Internet Security, 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory
- su command and : Practical UNIX & Internet Security, 4.3.6. Restricting su
- SUID files, list of : Practical UNIX & Internet Security, B.3. SUID and SGID Files
- utmp and wtmp files : Practical UNIX & Internet Security, 10.1.2. utmp and wtmp Files
- UUCP : Practical UNIX & Internet Security, 15.4.1.3. Format of USERFILE entry without system name
- /var/adm/loginlog file : Practical UNIX & Internet Security, 10.1.4. loginlog File
- wtmpx file : Practical UNIX & Internet Security, 10.1.2. utmp and wtmp Files
- chroot in : Practical UNIX & Internet Security, 8.1.5. Restricted Filesystem
- accounting with
: Practical UNIX & Internet Security, 10.2.1. Accounting with System V UNIX
- SYSTEM5 macro
: sendmail, 18.8. Alphabetized Reference
- Systems file
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