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Index: S
- S/Key codebook scheme
: 8.7.3. Code Books
- sa command : 10.2. The acct/pacct Process Accounting File
- sabotage : (see terrorism; vandalism)
- salt
- sa command : 10.2. The acct/pacct Process Accounting File
- sanitizing media
: 12.3.2.3. Sanitize your media before disposal
- SATAN package
- savacct file
: 10.2. The acct/pacct Process Accounting File
- saved UID : 4.3.2. Saved IDs
- saving backup media
- saved UID : 4.3.2. Saved IDs
- sbrk command
: 23.2. Tips on Avoiding Security-related Bugs
- scanf function : 23.2. Tips on Avoiding Security-related Bugs
- scanning networks : 17.6. Network Scanning
- SCCS (Source Code Control System)
- scanf function : 23.2. Tips on Avoiding Security-related Bugs
- Scherbius, Arthur
: 6.3. The Enigma Encryption System
- screen savers : 12.3.5.2. X screen savers
- screens, multiple : 12.3.4.3. Multiple screens
- script command : 24.1.2. Rule #2: DOCUMENT
- scripts, CGI : (see CGI, scripts)
- scytales : 6.1. A Brief History of Cryptography
- search warrants
- screen savers : 12.3.5.2. X screen savers
- searching for .rhosts file
: 17.3.18.5. Searching for .rhosts files
- Seberry, Jennifer : 6.5.4.3. HAVAL
- secrecy, Kerberos : 19.6.1.3. Authentication, data integrity, and secrecy
- secret keys : 6.4.6. RSA and Public Key Cryptography
- Secret Service, U.S.
- Seberry, Jennifer : 6.5.4.3. HAVAL
- Secure Hash Algorithm (SHA)
- Secure HTTP
: 18.4.1. Eavesdropping Over the Wire
- Secure NFS : 19.3.2.4. Using Secure NFS
- -secure option
- Secure NFS : 19.3.2.4. Using Secure NFS
- secure option for /etc/exports
: 20.2.1.1. /etc/exports
- Secure RPC
- 19.3. Secure RPC (AUTH_DES)
- 19.3.4. Limitations of Secure RPC
- with NIS/NIS+
- 19.3.4. Limitations of Secure RPC
- NTP and
: 19.3.1.3. Setting the window
- reauthentication : 19.3.1.3. Setting the window
- versus Kerberos : 19.6.2. Kerberos vs. Secure RPC
- reauthentication : 19.3.1.3. Setting the window
- 19.3. Secure RPC (AUTH_DES)
- Secure Socket Layer
: (see SSL)
- secure terminals : 8.5.1. Secure Terminals
- SecureID : 8.7.2. Token Cards
- SecureNet key : 8.7.2. Token Cards
- security
- secure terminals : 8.5.1. Secure Terminals
- 2.1. Planning Your Security Needs
- 9.1.2. Read-only Filesystems
- 12.1.1. The Physical Security Plan
- (see also integrity; physical security; system administration; threats)
- of CGI scripts
- 9.1.2. Read-only Filesystems
- changed detection
- checking arguments
: 23.2. Tips on Avoiding Security-related Bugs
- critical messages to log
- cryptography
- definition of
: 1.1. What Is Computer Security?
- digital signatures : (see digital signatures)
- disabling finger : 17.3.8.2. Disabling finger
- disk quotas : 25.2.2.5. Using quotas
- dormant accounts, finding : 8.4.3. Finding Dormant Accounts
- drills : 24.1.3. Rule #3: PLAN AHEAD
- /etc/passwd : (see /etc/group file; /etc/passwd file)
- firewalls : (see firewalls)
- four steps toward : 2.4.4.7. Defend in depth
- guessable passwords
- digital signatures : (see digital signatures)
- identification protocol
: 17.3.12. Identification Protocol (auth) (TCP Port 113)
- improving DES algorithm
- IP
- laws and
: (see laws)
- legal liability
- levels of NIS+ servers
: 19.5.5. NIS+ Limitations
- link-level : 16.3.1. Link-level Security
- message digests : (see message digests)
- modems and
- link-level : 16.3.1. Link-level Security
- monitoring
: (see logging)
- multilevel (defense in depth)
- name service and
: 16.3.2. Security and Nameservice
- national : 26.2.2. Federal Jurisdiction
- network services
- national : 26.2.2. Federal Jurisdiction
- passwords
- personnel
- policy of
- protecting backups
- published resources on
- responding to breakins
- restricting login
: 8.3. Restricting Logins
- .rhosts : (see .rhosts file)
- sendmail problems : 17.3.4.1. sendmail and security
- Skipjack algorithm : 6.4.1. Summary of Private Key Systems
- SNMP and : 17.3.15. Simple Network Management Protocol (SNMP) (UDP Ports 161 and 162)
- software piracy : 26.4.2.1. Software piracy and the SPA
- standards of : 2.4.2. Standards
- superuser problems : 4.2.1.5. The problem with the superuser
- through obscurity
- .rhosts : (see .rhosts file)
- tools for
: 11.1. Programmed Threats: Definitions
- Tripwire package
- UNIX and
- user awareness of
- UUCP
: (see UUCP)
- weakness-finding tools : 11.1.1. Security Tools
- World Wide Web
- weakness-finding tools : 11.1.1. Security Tools
- X Window System
- 2.1. Planning Your Security Needs
- Security Emergency Response Team (SERT)
: F.3.4.4. Australia: Internet .au domain
- security file (UUCP) : 10.3.4. uucp Log Files
- security holes
- security file (UUCP) : 10.3.4. uucp Log Files
- 2.5. The Problem with Security Through Obscurity
- (see also back doors; threats)
- ftpd program : 6.5.2. Using Message Digests
- mailing list for : E.1.3.3. Bugtraq
- reporting : 2.5.1. Going Public
- ruusend in L.cmds file : 15.4.3. L.cmds: Providing Remote Command Execution
- SUID/SGID programs : 5.5.3.1. write: Example of a possible SUID/SGID security hole
- /usr/lib/preserve : 5.5.3.2. Another SUID example: IFS and the /usr/lib/preserve hole
- UUCP : 15.7. Early Security Problems with UUCP
- (see also back doors; threats)
- 2.5. The Problem with Security Through Obscurity
- sed scripts
: 11.1.4. Trojan Horses
- seeds, random number
- select system call
: 17.1.3. The /etc/inetd Program
- selection lists : 18.2.3.1. Do not trust the user's browser!
- self-destruct sequences : 27.2.1. Hardware Bugs
- SENDFILES= command
- selection lists : 18.2.3.1. Do not trust the user's browser!
- sendmail
- 11.1.2. Back Doors and Trap Doors
- 11.5.2.5. .forward, .procmailrc
- 11.5.3.3. /usr/lib/aliases, /etc/aliases, /etc/sendmail/aliases, aliases.dir, or aliases.pag
- 17.3.4. Simple Mail Transfer Protocol (SMTP) (TCP Port 25)
- 17.3.4.3. Improving the security of Berkeley sendmail V8
- 24.2.4.2. How to contact the system administrator of a computer you don't know
- (see also mail)
- aliases : 11.5.3.3. /usr/lib/aliases, /etc/aliases, /etc/sendmail/aliases, aliases.dir, or aliases.pag
- determining version of : 17.3.4.1. sendmail and security
- .forward file : 24.4.1.6. Changes to startup files
- improving Version 8 : 17.3.4.3. Improving the security of Berkeley sendmail V8
- logging to syslog : 17.3.4.3. Improving the security of Berkeley sendmail V8
- same Internet/NIS domain : 19.4.3. NIS Domains
- security problems with : 17.3.4.1. sendmail and security
- 11.5.2.5. .forward, .procmailrc
- 11.1.2. Back Doors and Trap Doors
- sendmail.cf file
: 17.3.4. Simple Mail Transfer Protocol (SMTP) (TCP Port 25)
- sensors : (see detectors)
- separation of duties : 13.2.5. Least Privilege and Separation of Duties
- sequence of commands : 23.2. Tips on Avoiding Security-related Bugs
- serial interfaces : 14.2. Serial Interfaces
- Serial Line Internet Protocol (SLIP) : 14.5. Modems and UNIX
- serial numbers, logging : 10.7.1.2. Informational material
- SERT (Security Emergency Response Team) : F.3.4.4. Australia: Internet .au domain
- server-side includes
- sensors : (see detectors)
- servers
- 16.2.5. Clients and Servers
- 17.1. Understanding UNIX Internet Servers
- 17.1.3. The /etc/inetd Program
- backing up : 7.2.2. Small Network of Workstations and a Server
- checklist for bringing up : 17.4. Security Implications of Network Services
- controlling access to : 17.2. Controlling Access to Servers
- ftp : (see FTP)
- http : (see http server)
- load shedding : 23.3. Tips on Writing Network Programs
- master/slave : (see NIS)
- NIS+, security levels of : 19.5.5. NIS+ Limitations
- overloading with requests : 25.3.1. Service Overloading
- setting up for FTP
- 17.1. Understanding UNIX Internet Servers
- web
: (see web servers)
- WN : 18.3. Controlling Access to Files on Your Server
- Xauthority : 17.3.21.4. Using Xauthority magic cookies
- WN : 18.3. Controlling Access to Files on Your Server
- 16.2.5. Clients and Servers
- service overloading
: 25.3.1. Service Overloading
- services file : 17.1.1. The /etc/services File
- Services table (NIS+) : 19.5.3. NIS+ Tables
- SESAME (Secure European System for Applications in a Multivendor Environment) : 19.7.2. SESAME
- session
- services file : 17.1.1. The /etc/services File
- setgid function
- setpgrp function
: C.1.3.4. Process groups and sessions
- setrlimit function : 23.2. Tips on Avoiding Security-related Bugs
- setsid function : C.1.3.4. Process groups and sessions
- setuid file : 4.3.1. Real and Effective UIDs
- setuid function : 23.4. Tips on Writing SUID/SGID Programs
- setuid/setgid : (see SUID/SGID programs)
- SGID bit
- setrlimit function : 23.2. Tips on Avoiding Security-related Bugs
- 5.5.1. SUID, SGID, and Sticky Bits
- 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory Record Locking
- (see also SUID/SGID programs)
- clearing with chown : 5.7. chown: Changing a File's Owner
- on directories : 5.5.6. SGID and Sticky Bits on Directories
- on files : 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory Record Locking
- 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory Record Locking
- 5.5.1. SUID, SGID, and Sticky Bits
- SGID files
: B.3.2.2. SGID files
- sh (Bourne shell)
- sh program : 5.5.3.2. Another SUID example: IFS and the /usr/lib/preserve hole
- SUID and : 5.5.2. Problems with SUID
- SHA (Secure Hash Algorithm)
- shadow file
- shadow passwords
- Shamir, Adi
- shar format file
: 11.1.4. Trojan Horses
- shareware : 27.2.2. Viruses on the Distribution Disk
- shell escapes
- shareware : 27.2.2. Viruses on the Distribution Disk
- shell scripts, SUID
- shells
- 1.2. What Is an Operating System?
- 3.2.1. The /etc/passwd File
- 11.1.4. Trojan Horses
- 11.5.1. Shell Features
- 11.5.1.4. Filename attacks
- C.2. Creating Processes
- C.5.3. Running the User's Shell
- changing
- 3.2.1. The /etc/passwd File
- history files
: 10.4.1. Shell History
- one-command accounts : 8.1.3. Accounts That Run a Single Command
- restricted (rsh, ksh)
- one-command accounts : 8.1.3. Accounts That Run a Single Command
- UUCP : (see uucico program)
- 1.2. What Is an Operating System?
- shells file
: 8.4.2. Changing the Account's Login Shell
- Shimomura, Tsutomu : 23.3. Tips on Writing Network Programs
- shoulder surfing
- Shimomura, Tsutomu : 23.3. Tips on Writing Network Programs
- shredders
: 12.3.3. Other Media
- SHTTP : (see Secure HTTP)
- shutdowns and wtmp file : 10.1.3. last Program
- SIGHUP signal : C.4. The kill Command
- SIGKILL signal : C.4. The kill Command
- Signal Ground (SG) : 14.3. The RS-232 Serial Protocol
- signal grounding : 25.3.3. Signal Grounding
- signals : C.3. Signals
- signature : 9.2. Detecting Change
- signatures : (see digital signatures)
- SIGSTOP signal : C.4. The kill Command
- SIGTERM signal : 25.2.1.1. Too many processes
- Simple Mail Transfer Protocol (SMTP)
- SHTTP : (see Secure HTTP)
- Simple Network Management Protocol
: (see SNMP)
- single-user mode : C.5.1. Process #1: /etc/init
- Skipjack algorithm : 6.4.1. Summary of Private Key Systems
- slash (/)
- single-user mode : C.5.1. Process #1: /etc/init
- IFS separator
: 11.5.1.2. IFS attacks
- root directory
- 5.1.1. Directories
- (see also root directory)
- 5.1.1. Directories
- IFS separator
: 11.5.1.2. IFS attacks
- Slave mode (uucico)
: 15.1.4. How the UUCP Commands Work
- slave server
- 19.4. Sun's Network Information Service (NIS)
- (see also NIS)
- 19.4. Sun's Network Information Service (NIS)
- SLIP (Serial Line Internet Protocol)
- Small Business Community Nationwide (SBA CERT)
: F.3.4.31. Small Business Association (SBA): small business community nationwide
- smap program : 17.3.4.1. sendmail and security
- smart cards, firewalls : 21.5. Special Considerations
- smit tool : 8.8.2. Constraining Passwords
- smoke and smoking : 12.2.1.2. Smoke
- SMTP (Simple Mail Transfer Protocol)
- smap program : 17.3.4.1. sendmail and security
- SNA (System Network Architecture)
: 16.4.2. SNA
- SNEFRU algorithm : 6.5.4.4. SNEFRU
- sniffers
- SNEFRU algorithm : 6.5.4.4. SNEFRU
- SNMP (Simple Network Management Protocol)
: 17.3.15. Simple Network Management Protocol (SNMP) (UDP Ports 161 and 162)
- snoop program : 24.2.3. Monitoring the Intruder
- SOCKS : E.4.8. SOCKS
- soft disk quotas : 25.2.2.5. Using quotas
- software
- snoop program : 24.2.3. Monitoring the Intruder
- for backups
- bugs in
: (see bugs)
- for checking integrity : 19.5.5. NIS+ Limitations
- checking new
- for checking integrity : 19.5.5. NIS+ Limitations
- consistency of
: 2.1. Planning Your Security Needs
- distributing : (see FTP)
- exporting : 26.4.1. Munitions Export
- failure of : 7.1.1.1. A taxonomy of computer failures
- hacker challenges : 27.2.4. Hacker Challenges
- logic bombs : 11.1.3. Logic Bombs
- operating system : (see operating systems)
- patches for, logging : 10.7.2.2. Informational material
- quality of
- distributing : (see FTP)
- stolen (pirated)
- stored via FTP
: 17.3.2.6. Setting up anonymous FTP with the standard UNIX FTP server
- testing : 1.4.2. Software Quality
- vendor license agreements : 18.5.2. Trusting Your Software Vendor
- viruses : 11.1.5. Viruses
- worms : 11.1.6. Worms
- testing : 1.4.2. Software Quality
- software patents
: 6.7.1. Cryptography and the U.S. Patent System
- Software Publishers Association (SPA) : 26.4.2.1. Software piracy and the SPA
- Software Security Response Team (SSRT) : F.3.4.9. Digital Equipment Corporation and customers
- Solaris
- Software Publishers Association (SPA) : 26.4.2.1. Software piracy and the SPA
- 1.3. History of UNIX
- 8.7.1. Integrating One-time Passwords with UNIX
- /etc/logindevperm : 17.3.21.1. /etc/fbtab and /etc/logindevperm
- process limit : 25.2.1.1. Too many processes
- Secure RPC time window : 19.3.1.3. Setting the window
- /var/adm/loginlog file : 10.1.4. loginlog File
- wtmpx file : 10.1.2. utmp and wtmp Files
- 8.7.1. Integrating One-time Passwords with UNIX
- 1.3. History of UNIX
- Source Code Control System (SCCS)
: 7.3.2. Building an Automatic Backup System
- source code, keeping secret : 2.5. The Problem with Security Through Obscurity
- SPA (Software Publishers Association) : 26.4.2.1. Software piracy and the SPA
- Spaf's first principle : 2.4.4.5. Have authority commensurate with responsibility
- spies
- source code, keeping secret : 2.5. The Problem with Security Through Obscurity
- spoofing : 16.3. IP Security
- network connection
: 8.5.3.1. Trusted path
- network services : 17.5. Monitoring Your Network with netstat
- NIS : 19.4.4.5. Spoofing NIS
- RPCs : 19.4.4.4. Spoofing RPC
- network services : 17.5. Monitoring Your Network with netstat
- network connection
: 8.5.3.1. Trusted path
- spool file
: 15.1.4. How the UUCP Commands Work
- spoolers, printer : 12.3.4.1. Printer buffers
- sprinkler systems
- spoolers, printer : 12.3.4.1. Printer buffers
- 12.2.1.1. Fire
- (see also water)
- 12.2.1.1. Fire
- Sprint response team
: F.3.4.32. Sprint
- sprintf function
- sscanf function
: 23.2. Tips on Avoiding Security-related Bugs
- SSL (Secure Socket Layer) : 18.4.1. Eavesdropping Over the Wire
- SSRT (Software Security Response Team) : F.3.4.9. Digital Equipment Corporation and customers
- Stallman, Richard : 1. Introduction
- start bit
- SSL (Secure Socket Layer) : 18.4.1. Eavesdropping Over the Wire
- startup command
: 10.2.1. Accounting with System V
- startup files
- attacks via
- intruder's changes to : 24.4.1.6. Changes to startup files
- stat function
: 5.4. Using Directory Permissions
- state law enforcement : 26.2.1. The Local Option
- stateless : 20.1.4.3. Connectionless and stateless
- static electricity : 12.2.1.8. Electrical noise
- static links : 23.4. Tips on Writing SUID/SGID Programs
- stdio : (see portable I/O library)
- Steele, Guy L. : 1. Introduction
- sticky bits : 5.5.1. SUID, SGID, and Sticky Bits
- state law enforcement : 26.2.1. The Local Option
- on directories : 5.5.6. SGID and Sticky Bits on Directories
- stolen property
: (see theft)
- stop bit
- storage
- strcpy routine
: 23.1.1. The Lesson of the Internet Worm
- streadd function : 23.2. Tips on Avoiding Security-related Bugs
- strecpy function : 23.2. Tips on Avoiding Security-related Bugs
- strength, cryptographic : 6.2.3. Cryptographic Strength
- streadd function : 23.2. Tips on Avoiding Security-related Bugs
- of DES algorithm
- of RSA algorithm : 6.4.6.3. Strength of RSA
- string command
: 12.3.5.2. X screen savers
- strtrns function : 23.2. Tips on Avoiding Security-related Bugs
- su command
- strtrns function : 23.2. Tips on Avoiding Security-related Bugs
- 4.2.1.2. Superuser is not for casual use
- 4.3. su: Changing Who You Claim to Be
- 4.3.8. Other Uses of su
- becoming superuser : 4.3.4. Becoming the Superuser
- log of failed attempts : 4.3.7. The Bad su Log
- sulog file
- 4.3. su: Changing Who You Claim to Be
- utmp and wtmp files and : 10.1.2.1. su command and /etc/utmp and /var/adm/wtmp files
- 4.2.1.2. Superuser is not for casual use
- subnetting
: 16.2.1.2. Classical network addresses
- substitution (in encryption) : 6.1.2. Cryptography and Digital Computers
- SUID/SGID programs
- substitution (in encryption) : 6.1.2. Cryptography and Digital Computers
- 4.3.1. Real and Effective UIDs
- 5.5. SUID
- 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory Record Locking
- B.3. SUID and SGID Files
- back door via : 11.1.2. Back Doors and Trap Doors
- chown command and : 5.7. chown: Changing a File's Owner
- chroot call and : 8.1.5.2. Checking new software
- created by intruders : 24.4.1.3. New SUID and SGID files
- on directories : 5.5.6. SGID and Sticky Bits on Directories
- disabling (turning off) : 5.5.5. Turning Off SUID and SGID in Mounted Filesystems
- finding all files
- 5.5. SUID
- shell scripts
- uucp access
: 15.3. UUCP and Security
- writing : 23.4. Tips on Writing SUID/SGID Programs
- 4.3.1. Real and Effective UIDs
- SUID/SGID programs:writing:programming:writing:zzz]
: 23. Writing Secure SUID and Network Programs
- suing : (see civil actions)
- sulog file
- suing : (see civil actions)
- sum command
- Sun Microsystem's NIS
: (see NIS)
- Sun Microsystems : F.3.4.34. Sun Microsystems customers
- SUN-DES-1 authentication : 17.3.21.3. The xhost facility
- SunOS operating system : 1.3. History of UNIX
- Sun Microsystems : F.3.4.34. Sun Microsystems customers
- authdes_win variable
: 19.3.1.3. Setting the window
- /etc/fbtab file : 17.3.21.1. /etc/fbtab and /etc/logindevperm
- TFTP sand : 17.3.7. Trivial File Transfer Protocol (TFTP) (UDP Port 69)
- trusted hosts and : 17.3.18.5. Searching for .rhosts files
- /etc/fbtab file : 17.3.21.1. /etc/fbtab and /etc/logindevperm
- authdes_win variable
: 19.3.1.3. Setting the window
- superencryption
: 6.4.5. Improving the Security of DES
- superuser
- 4. Users, Groups, and the Superuser
- 4.2.1. The Superuser
- 4.2.1.5. The problem with the superuser
- (see also root account)
- abilities of : 27.1.3. What the Superuser Can and Cannot Do
- becoming with su : 4.3.4. Becoming the Superuser
- changing passwords
- 4.2.1. The Superuser
- encryption and
: 6.2.4. Why Use Encryption with UNIX?
- logging attempts to become : (see sulog file)
- problems with : 4.2.1.5. The problem with the superuser
- restrictions on : 4.2.1.4. What the superuser can't do
- TCB files : 8.5.3.2. Trusted computing base
- using passwd command : 3.5. Verifying Your New Password
- web server as : 18.2.1. The Server's UID
- logging attempts to become : (see sulog file)
- 4. Users, Groups, and the Superuser
- SURFnet
: F.3.4.25. Netherlands: SURFnet-connected sites
- surges : (see power surges)
- SVR4 (System V Release 4) : 1.3. History of UNIX
- swap partition : 5.5.1. SUID, SGID, and Sticky Bits
- swap space : 25.2.3. Swap Space Problems
- Swatch program
- surges : (see power surges)
- SWITCH
: F.3.4.35. SWITCH-connected sites
- symbolic links and permissions : 5.1.7. File Permissions in Detail
- symbolic-link following
- symbolic links and permissions : 5.1.7. File Permissions in Detail
- SymLinksIfOwnerMatch option
: 18.3.2. Commands Within the <Directory> Block
- symmetric key : (see private-key cryptography)
- SYN bit : 16.2.4.2. TCP
- sync system call
- symmetric key : (see private-key cryptography)
- sys (user)
: 4.1. Users and Groups
- syslog facility
- syslog file
: 17.3.4.3. Improving the security of Berkeley sendmail V8
- syslog.conf file : 10.5.1. The syslog.conf Configuration File
- systat service : 17.3.1. systat (TCP Port 11)
- system
- syslog.conf file : 10.5.1. The syslog.conf Configuration File
- auditing activity on
: 2.1. Planning Your Security Needs
- backing up critical files
- control over
: (see access control)
- database files : 1.2. What Is an Operating System?
- overload attacks : 25.2.1.2. System overload attacks
- performance : (see performance)
- remote, commands on : 15.1.2. uux Command
- summarizing usage per user : 25.2.2.2. quot command
- transfering files to other : 15.1.1. uucp Command
- database files : 1.2. What Is an Operating System?
- auditing activity on
: 2.1. Planning Your Security Needs
- system (in swatch program)
: 10.6.2. The Swatch Configuration File
- system administration : 2.4.4.5. Have authority commensurate with responsibility
- avoiding conventional passwords
- change monitoring
: 9.3. A Final Note
- changing passwords
- cleaning up /tmp directory
: 25.2.4. /tmp Problems
- contacting administrator : 24.2.4.2. How to contact the system administrator of a computer you don't know
- controlling UUCP security : 15.3. UUCP and Security
- detached signatures (PGP) : 6.6.3.6. PGP detached signatures
- disabling finger system : 17.3.8.2. Disabling finger
- discovering intruders
- contacting administrator : 24.2.4.2. How to contact the system administrator of a computer you don't know
- dual universes and
: 5.9.1. Dual Universes
- errors by : 7.1.1.1. A taxonomy of computer failures
- finding largest files : 25.2.2.1. Disk-full attacks
- immutable files and : 9.1.1. Immutable and Append-Only Files
- locked accounts : 3.3. Entering Your Password
- message authentication : 6.5.2. Using Message Digests
- monitoring phantom mail : 17.3.4.2. Using sendmail to receive email
- new passwords : 3.4. Changing Your Password
- read-only filesystems and : 9.1.2. Read-only Filesystems
- references on : D.1.11. UNIX Programming and System Administration
- removing automatic backups : 18.2.3.5. Beware stray CGI scripts
- sanitizing media : 12.3.2.3. Sanitize your media before disposal
- trusting : 27.3.2. Your System Administrator?
- weakness-finding tools : 11.1.1. Security Tools
- errors by : 7.1.1.1. A taxonomy of computer failures
- system call
: 5.1.7. File Permissions in Detail
- system clock
- changing
- for random seeds
: 23.8. Picking a Random Seed
- Secure RPC timestamp : 19.3.1.3. Setting the window
- system files : 11.6.1.2. Writable system files and directories
- initialization files : 11.5.3.5. System initialization files
- system function
- system functions, checking arguments to
: 23.2. Tips on Avoiding Security-related Bugs
- System Network Architecture (SNA) : 16.4.2. SNA
- System V UNIX
- System Network Architecture (SNA) : 16.4.2. SNA
- Which UNIX System?
- 1.3. History of UNIX
- accounting with : 10.2.1. Accounting with System V
- chroot in : 8.1.5. Restricted Filesystem
- default umask value : 5.3. The umask
- groups and : 4.1.3.2. Groups and older AT&T UNIX
- inittab program : C.5.1. Process #1: /etc/init
- modems and : 14.5.1. Hooking Up a Modem to Your Computer
- passwords : 8.1.1. Accounts Without Passwords
- ps command with : C.1.2.1. Listing processes with systems derived from System V
- random number generators : 23.7.3. drand48 ( ), lrand48 ( ), and mrand48 ( )
- recent login times : 10.1.1. lastlog File
- Release 4 (SVR4) : 1.3. History of UNIX
- restricted shells : 8.1.4.1. Restricted shells under System V UNIX
- SGI bit on files : 5.5.7. SGID Bit on Files (System V UNIX Only): Mandatory Record Locking
- su command and : 4.3.6. Restricting su
- SUID files, list of : B.3. SUID and SGID Files
- utmp and wtmp files : 10.1.2. utmp and wtmp Files
- UUCP : 15.4.1.3. Format of USERFILE entry without system name
- /var/adm/loginlog file : 10.1.4. loginlog File
- wtmpx file : 10.1.2. utmp and wtmp Files
- 1.3. History of UNIX
- Which UNIX System?
- Systems file : 15.3.3. Security of L.sys and Systems Files
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