Symbols | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
Index: L
- L flag (Linux routing table): 2.4. The Routing Table (TCP/IP Network Administration)
- label field (inittab file): 5.2.1.1. Understanding /etc/inittab (TCP/IP Network Administration)
- labeled form of SNMP output: 7.2.1.5. snmptranslate (Network Troubleshooting Tools)
- labeling
- cables: 3.1.2. Maintaining Existing Cabling (Network Troubleshooting Tools)
- interfaces in mrtg graphs: 8.4.1.1. mrtg configuration file (Network Troubleshooting Tools)
- label makers: 3.1.2. Maintaining Existing Cabling (Network Troubleshooting Tools)
- map devices: 6.5.1.1. Drawing maps with tkined (Network Troubleshooting Tools)
- labeling the system: 27.5.2. Labeling and Diagramming Your System (Building Internet Firewalls)
- labels, domain name (see domain name labels)
- labels, in graphs: 9.2.2. OpenView Graphing (Essential SNMP)
- 9.2.2. OpenView Graphing (Essential SNMP)
- 9.2.2. OpenView Graphing (Essential SNMP)
- 13.3. Graphing Other Objects (Essential SNMP)
- laboratory networks: 6.7.1. Laboratory Networks (Building Internet Firewalls)
- lame delegations: 7.6.2.1. BIND 4.9 and 8 statistics (DNS and Bind)
- lame server message: 7.6.1. Common Syslog Messages (DNS and Bind)
- lame-servers category: 7.5.3.1. BIND 8 categories (DNS and Bind)
- lame TTL: 10.12.4. TTLs (DNS and Bind)
- lame-ttl option (named): C.2.5. The options Statement (TCP/IP Network Administration)
- lamers DNS tool: 10.1.4.2. doc, dnswalk, and lamers (Network Troubleshooting Tools)
- A.4. Sources for Tools (Network Troubleshooting Tools)
- LAN-oriented service: 10.6. Selecting Services Provided by a Bastion Host (Building Internet Firewalls)
- LANalyzer tool: 5.8. Microsoft Windows (Network Troubleshooting Tools)
- LanguagePriority directive (httpd.conf file): 11.3.6. Defining File Types (TCP/IP Network Administration)
- LanMan format: 21.2. Passwords (Building Internet Firewalls)
- LanManager: 17.4. File Sharing for Microsoft Networks (Building Internet Firewalls)
- LANs
- DNS and: 1.5. Must I Use DNS? (DNS and Bind)
- mapping tools and: 6.5. Mapping or Diagramming (Network Troubleshooting Tools)
- network management and: 6.1.3. Selecting a Product (Network Troubleshooting Tools)
- ping results and: 3.3.2.2. Interpreting results (Network Troubleshooting Tools)
- traffic and: 8.1.2. Capacity Planning (DNS and Bind)
- virtual LANs: 5.7.2. Protecting Yourself (Network Troubleshooting Tools)
- 6.5. Mapping or Diagramming (Network Troubleshooting Tools)
- laptop computers, as troubleshooting tool: 13.2. Diagnostic Tools (TCP/IP Network Administration)
- large packets: 3.3.3.3. Ping of Death (Network Troubleshooting Tools)
- last command, security and: 12.4.2.2. Checking login activity (TCP/IP Network Administration)
- Lawrence Berkeley National Laboratory Network Research Group: A.2. Generic Sources (Network Troubleshooting Tools)
- Layer 2 Transport Protocol (L2TP): 14.12. Layer 2 Transport Protocol (L2TP) (Building Internet Firewalls)
- layering rewalls: 3.2. Defense in Depth (Building Internet Firewalls)
- layers
- data link: 1.2. Physical and data link layers (Managing NFS and NIS)
- network: 1.3. Network layer (Managing NFS and NIS)
- network protocols: 1.1. Networking overview (Managing NFS and NIS)
- OSI Model: 1.2. A Data Communications Model (TCP/IP Network Administration)
- stacks: 1.1. Networking overview (Managing NFS and NIS)
- TCP/IP models: 1.3. TCP/IP Protocol Architecture (TCP/IP Network Administration)
- see also ISO: 1.2. Physical and data link layers (Managing NFS and NIS)
- lcladdr parameter
- lcp-echo-failure option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- lcp-echo-interval option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- LCP (Link Control Protocol): 6.2.1. The Serial Protocols (TCP/IP Network Administration)
- lcp-max-configure option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- lcp-max-failure option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- lcp-max-terminate option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- lcp-restart option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- LDAP (Lightweight Directory Access Protocol): 2.7. Naming and Directory Services (Building Internet Firewalls)
- 20.5. Lightweight Directory Access Protocol (LDAP) (Building Internet Firewalls)
- 2.2.5. Lightweight Directory Access Protocol (LDAP) (Managing NFS and NIS)
- ldap (sendmail K command value): E.4.5. The sendmail K Command (TCP/IP Network Administration)
- LDAPROUTE_DOMAIN macro (sendmail): E.3. m4 sendmail Macros (TCP/IP Network Administration)
- LDAPROUTE_DOMAIN_FILEmacro (sendmail): E.3. m4 sendmail Macros (TCP/IP Network Administration)
- leaf nodes: 2.3.1. Naming OIDs (Essential SNMP)
- learning periods for polling: 9.2.4. Castle Rock's SNMPc (Essential SNMP)
- leases, DHCP: 3.6.2. Dynamic Host Configuration Protocol (TCP/IP Network Administration)
- least privilege principle: 3.1. Least Privilege (Building Internet Firewalls)
- 24.1.4.1. Least privilege (Building Internet Firewalls)
- 24.2.4.1. Least privilege (Building Internet Firewalls)
- least privilege, running BIND with: 11.2.4. Running BIND with Least Privilege (DNS and Bind)
- legal issues
- documentation of incidents: 27.1.8. Document the Incident (Building Internet Firewalls)
- pursuing intruders: 27.3. Pursuing and Capturing the Intruder (Building Internet Firewalls)
- security responsibilities: 25.2.3. External Factors That Influence Security Policies (Building Internet Firewalls)
- ssh tool: 11.1.3. ssh (Network Troubleshooting Tools)
- use of network tools: 1.3.2.3. Legal and ethical considerations (Network Troubleshooting Tools)
- Leinen, Simon: 10.2.7. Monitoring Traps with Perl (Essential SNMP)
- E. SNMP Support for Perl (Essential SNMP)
- lengths
- level parameter (gated): B.8.3. The isis Statement (TCP/IP Network Administration)
- levels of security: F.1.4. SNMPv3 Textual Conventions (Essential SNMP)
- F.2.2.2. Simplifying commands by setting defaults (Essential SNMP)
- levels of service, ISP: 4.2.3.4. Other related tools (Network Troubleshooting Tools)
- levels of usage, variations in: 8.1. What, When, and Where (Network Troubleshooting Tools)
- levels, stacks: 1.1. Networking overview (Managing NFS and NIS)
- lib/modules directory: 5.1.1. Using Dynamically Loadable Modules (TCP/IP Network Administration)
- libpcap library: 5.4. tcpdump (Network Troubleshooting Tools)
- 5.5.3. tcpflow (Network Troubleshooting Tools)
- 8.3.1. ntop (Network Troubleshooting Tools)
- 13.5.3. Capture filters (Managing NFS and NIS)
- libpng library: 13.1. Using MRTG (Essential SNMP)
- libwrap (see TCP-wrappers)
- licensing: 1.3.1. Documentation (Network Troubleshooting Tools)
- 6.1.1. Characteristics of Management Software (Network Troubleshooting Tools)
- A.3. Licenses (Network Troubleshooting Tools)
- excess objects and: 6.1.2. The netmon Process (Essential SNMP)
- OpenView NNM: 6.1. HP's OpenView Network Node Manager (Essential SNMP)
- SNMPc: 6.2. Castle Rock's SNMPc Enterprise Edition (Essential SNMP)
- SSH1, SSH2, and OpenSSH: 1.5. History of SSH (SSH, The Secure Shell)
- lifetime parameter (gated): B.8.9. The routerdiscovery Statement (TCP/IP Network Administration)
- light debugging, compile-time configuration: 4.1.5.14. Debug output (SSH, The Secure Shell)
- lights on interfaces: 3.1.3.1. Link lights (Network Troubleshooting Tools)
- Lightweight Directory Access Protocol (see LDAP)
- limit directive: E.2.11.1. limit transfers-in (DNS and Bind)
- limit datasize: 10.12.2.1. Changing the data segment size limit (DNS and Bind)
- E.2.11.3. limit datasize (DNS and Bind)
- limit stacksize: 10.12.2.2. Changing the stack size limit (DNS and Bind)
- limit transfers-in: 10.12.1.2. Limiting the total number of zone transfers requested (DNS and Bind)
- E.2.11.1. limit transfers-in (DNS and Bind)
- limit transfers-per-ns: 10.12.1.1. Limiting transfers requested per name server (DNS and Bind)
- E.2.11.1. limit transfers-in (DNS and Bind)
- E.2.11.2. limit transfers-per-ns (DNS and Bind)
- limited broadcast addresses: 3.6.2.1. How DHCP works (TCP/IP Network Administration)
- limited use protocols: 1.1.2. Protocol Standards (TCP/IP Network Administration)
- limiting
- line mode (tcpdump): 5.4.1. Using tcpdump (Network Troubleshooting Tools)
- Line Printer (LP), configuring: 9.2.2. Line Printer Service (TCP/IP Network Administration)
- line printer spooling, Kerberos V5: 12.5.5.1. Kerberos V5 (Managing NFS and NIS)
- Linelimit field (sendmail): 10.5.8. Defining Mailers (TCP/IP Network Administration)
- lines, maximum speed of: A. Using Input and Output Octets (Essential SNMP)
- Link Control Protocol (LCP): 6.2.1. The Serial Protocols (TCP/IP Network Administration)
- link-level traffic
- addresses for hosts: 3.3.3. Problems with ping (Network Troubleshooting Tools)
- fixing performance: 12.2.2.2. Bottleneck analysis (Network Troubleshooting Tools)
- header information: 5.4.2.3. Controlling what's displayed (Network Troubleshooting Tools)
- links as bottlenecks: 12.2.2.2. Bottleneck analysis (Network Troubleshooting Tools)
- RMON and: 8.5. RMON (Network Troubleshooting Tools)
- link lights: 3.1.3.1. Link lights (Network Troubleshooting Tools)
- link operations, RPC procedures, NFS: 7.2.1. NFS RPC procedures (Managing NFS and NIS)
- Link-State Advertisement (LSA): 7.4.3. Open Shortest Path First (TCP/IP Network Administration)
- link-state database (OSPF): 7.4.3. Open Shortest Path First (TCP/IP Network Administration)
- link-state protocols: 7.4.3. Open Shortest Path First (TCP/IP Network Administration)
- linkDown notification or trap (SNMPv2): 2.6.6. SNMP Traps (Essential SNMP)
- 2.6.7. SNMP Notification (Essential SNMP)
- 10.1. Understanding Traps (Essential SNMP)
- disconnecting ports and: 10.3.5. Forcing Your Hardware to Generate Traps (Essential SNMP)
- Event Categories and: 10.3.5. Forcing Your Hardware to Generate Traps (Essential SNMP)
- objects in: 10.3.4. Sending Traps with Net-SNMP (Essential SNMP)
- responses to: 10.2. Receiving Traps (Essential SNMP)
- linkname option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- linkUp notification or trap (SNMPv2): 2.6.6. SNMP Traps (Essential SNMP)
- Linux (see also Unix)
- 11.2.1.1. syslog Linux example (Building Internet Firewalls)
- bastion host: 11. Unix and Linux Bastion Hosts (Building Internet Firewalls)
- BIND 8/9, compiling and installing on: C. Compiling and Installing BIND on Linux (DNS and Bind)
- broadcast addresses, setting: 6.1.5. Setting the Broadcast Address (TCP/IP Network Administration)
- commands
- depmod: 5.1.1. Using Dynamically Loadable Modules (TCP/IP Network Administration)
- dmesg: 6.1.1. The Interface Name (TCP/IP Network Administration)
- insmod: 5.1.1. Using Dynamically Loadable Modules (TCP/IP Network Administration)
- lsmod: 5.1.1. Using Dynamically Loadable Modules (TCP/IP Network Administration)
- modprob: 5.1.1. Using Dynamically Loadable Modules (TCP/IP Network Administration)
- rmmod: 5.1.1. Using Dynamically Loadable Modules (TCP/IP Network Administration)
- configuration programs: 2.2.2. Configuration Programs (Network Troubleshooting Tools)
- configuring resolvers for: 6.4.7. Linux (DNS and Bind)
- Debian Linux: 2.2.4. Startup Files and Scripts (Network Troubleshooting Tools)
- A.1.4. FreeBSD Ports (Network Troubleshooting Tools)
- domain names: 9.1.2.2. The /etc/exports file (TCP/IP Network Administration)
- Ethernet promiscuous mode, enabling and disabling: 6.1.6.3. Promiscuous mode (TCP/IP Network Administration)
- filesystem type, specifying: 9.1.3.1. The mount command (TCP/IP Network Administration)
- fstab files: 9.1.3.2. The vfstab and fstab files (TCP/IP Network Administration)
- ifcfg-eth0 file: 6.1.4. Assigning a Subnet Mask (TCP/IP Network Administration)
- interface configuration files: 6.1.3. Assigning an Address (TCP/IP Network Administration)
- Internet services on: 11.3.1. How Are Services Managed Under Unix? (Building Internet Firewalls)
- 11.3.3. Which Services Should You Leave Enabled? (Building Internet Firewalls)
- disabling: 11.3.2. Disabling Services Under Unix (Building Internet Firewalls)
- 11.3.4. Specific Unix Services to Disable (Building Internet Firewalls)
- installing and modifying: 11.4. Installing and Modifying Services (Building Internet Firewalls)
- ipchains: 8.9.1. Linux ipchains and Masquerading (Building Internet Firewalls)
- ipfilter: 8.9.2. ipfilter (Building Internet Firewalls)
- kernel configuration: 5.1. Kernel Configuration (TCP/IP Network Administration)
- loadable modules: 5.1.1. Using Dynamically Loadable Modules (TCP/IP Network Administration)
- machine
- masquerading: 8.9.1.3. Masquerading (Building Internet Firewalls)
- minicom: 6.3.7. Troubleshooting Serial Connections (TCP/IP Network Administration)
- mount options: 9.1.3.2. The vfstab and fstab files (TCP/IP Network Administration)
- named.conf file, caching-only servers: 8.3.1.1. A caching-only server configuration (TCP/IP Network Administration)
- NET SNMP: 7.2.1. NET SNMP (UCD SNMP) (Network Troubleshooting Tools)
- netfilter: 8.9.4. Linux netfilter (Building Internet Firewalls)
- netstat -in command output: 6.1.1. The Interface Name (TCP/IP Network Administration)
- network interfaces, checking status: 6.1.2. Checking the Interface with ifconfig (TCP/IP Network Administration)
- network management tools: 6.1.2. Discovery and Mapping Tools (Network Troubleshooting Tools)
- NFS, exports file: 9.1.2.2. The /etc/exports file (TCP/IP Network Administration)
- NIS domains: 9.4. Network Information Service (TCP/IP Network Administration)
- NIS server, initializing: 9.4. Network Information Service (TCP/IP Network Administration)
- packages: A.1.3. Red Hat Package Manager (Network Troubleshooting Tools)
- point-to-point connections, defining: 6.1.6.6. Point-to-point (TCP/IP Network Administration)
- printcap configuration tool: 9.2.1.1. The printcap file (TCP/IP Network Administration)
- rc.local script: 5.2.1.1. Understanding /etc/inittab (TCP/IP Network Administration)
- rc.sysinit script: 5.2.1.1. Understanding /etc/inittab (TCP/IP Network Administration)
- recompiling kernel: 2.2.3. Kernel (Network Troubleshooting Tools)
- routing cache, examining: 2.4. The Routing Table (TCP/IP Network Administration)
- routing metric, changing: 6.1.6.4. Metric (TCP/IP Network Administration)
- routing tables: 2.4. The Routing Table (TCP/IP Network Administration)
- runlevels: 5.2.1. Startup Runlevels (TCP/IP Network Administration)
- sendmail startup script: 10.2. Running sendmail as a Daemon (TCP/IP Network Administration)
- serial ports, troubleshooting: 6.3.7. Troubleshooting Serial Connections (TCP/IP Network Administration)
- smb.config file, location: 9.3.1. Configuring a Samba Server (TCP/IP Network Administration)
- startup and shutdown scripts: 2.2.4. Startup Files and Scripts (Network Troubleshooting Tools)
- snmptrap hooks in programs: 10.3.6. Using Hooks with Your Programs (Essential SNMP)
- static routing, adding to startup scripts: 7.3.1.1. Installing static routes at startup (TCP/IP Network Administration)
- syslog example: 11.2.1.1. syslog Linux example (Building Internet Firewalls)
- SystemEDGE: 5.1. SNMP Agents (Essential SNMP)
- 7.3.5. Concord SystemEDGE Agent for Unix and NT (Essential SNMP)
- traffic results with netstat: 4.2.4. Traffic Measurements with netstat (Network Troubleshooting Tools)
- Linux Documentation Project: A.1.3. The Linux Documentation Project (Building Internet Firewalls)
- Linux Router Project: A.1.4. The Linux Router Project (Building Internet Firewalls)
- linuxconf command (Linux): 2.2.2. Configuration Programs (Network Troubleshooting Tools)
- listen-on option (named): C.2.5. The options Statement (TCP/IP Network Administration)
- listen-on substatement: 10.15.1. Configuring the IPv4 Transport (DNS and Bind)
- listen-on-v6 substatement: 10.15.2. Configuring the IPv6 Transport (DNS and Bind)
- Listen option (multi-homed servers): 11.3.10. Multi-Homed Server Options (TCP/IP Network Administration)
- ListenAddress: 5.4.3.1. Port number and network interface (SSH, The Secure Shell)
- "listening" on an interface: an interface (SSH, The Secure Shell) 9.2.4.3. Listening on ("binding")
- listening port numbers: 9.2.7. The Listening Port Number (SSH, The Secure Shell)
- listening side, SSH sessions: 9.2.3.2. Local versus remote forwarding: the distinction (SSH, The Secure Shell)
- listing
- all devices on paths: 4.1.2. Complications with traceroute (Network Troubleshooting Tools)
- domain machines: 10.1.4.1. nslookup and dig (Network Troubleshooting Tools)
- filesystems: 12.5. Disk-Space Checker (Essential SNMP)
- interfaces: 8.2. Retrieving Multiple MIB Values (Essential SNMP)
- 8.3.1.1. Interactive mode (Network Troubleshooting Tools)
- managed objects: 1.4. The Structure of Management Information and MIBS (Essential SNMP)
- name servers: 10.1.4.1. nslookup and dig (Network Troubleshooting Tools)
- open files on systems: 2.1.4. lsof (Network Troubleshooting Tools)
- packages: A.1.2. Solaris Packages (Network Troubleshooting Tools)
- port numbers: 12.6. Port Monitor (Essential SNMP)
- ranked processes: 2.1.2. top (Network Troubleshooting Tools)
- routing tables: 2.1.3. netstat (Network Troubleshooting Tools)
- running processes: 2.1.1. ps (Network Troubleshooting Tools)
- search directories for MIB files: C.2. Common Command-Line Arguments (Essential SNMP)
- trap types: 7.3.6. Cisco Devices (Essential SNMP)
- 10. Traps (Essential SNMP)
- 10.3.5. Forcing Your Hardware to Generate Traps (Essential SNMP)
- lists of software tools: A.2. Generic Sources (Network Troubleshooting Tools)
- Livingston routers: 8.5. Conventions for Packet Filtering Rules (Building Internet Firewalls)
- LMRepl service: 22.6.3. Windows NT Directory Replication (Building Internet Firewalls)
- lo0 (loopback interface, Unix): 9.2.4.2. Access control and the loopback address (SSH, The Secure Shell)
- load averages, graphing: 13. MRTG (Essential SNMP)
- load category: 7.5.3.1. BIND 8 categories (DNS and Bind)
- load distribution (see round robin load distribution)
- load generators: 9.1.2. Load Generators (Network Troubleshooting Tools)
- hardware generators: 9.1.2.2. MGEN (Network Troubleshooting Tools)
- MGEN tools: 9.1.2.2. MGEN (Network Troubleshooting Tools)
- Microsoft Windows: 9.3. Microsoft Windows (Network Troubleshooting Tools)
- ping tools: 3.3.2.3. Options (Network Troubleshooting Tools)
- spray tool: 9.1.2.1. spray (Network Troubleshooting Tools)
- load printers parameter (smb.config file): 9.3.1. Configuring a Samba Server (TCP/IP Network Administration)
- loaded message: 7.6.1. Common Syslog Messages (DNS and Bind)
- loadhosts utility (NNM): 6.1.2. The netmon Process (Essential SNMP)
- loading MIBs: 7.2.1.2. Configuration and options (Network Troubleshooting Tools)
- 7.2.3.2. SNMP traps (Network Troubleshooting Tools)
- LoadModule directive (httpd.conf file): 11.3.1. Loading Dynamic Shared Objects (TCP/IP Network Administration)
- LOC records: 16.6.4. Location (DNS and Bind)
- local addresses, looking up
- local area networks (see LANs)
- 3.3.2.2. Interpreting results (Network Troubleshooting Tools)
- local computer, securing: 2.5. The SSH Agent (SSH, The Secure Shell)
- local domain name: 6.1.1. The Local Domain Name (DNS and Bind)
- local files
- local forwarding: 9.2.1. Local Forwarding (SSH, The Secure Shell)
- local hosts in ntop results: 8.3.1.1. Interactive mode (Network Troubleshooting Tools)
- Local Information (generic-linux.cf section): 10.4.2. General sendmail.cf Structure (TCP/IP Network Administration)
- Local Internet Registry (organizational type): 4.2.1.1. Obtaining an official network address (TCP/IP Network Administration)
- LOCAL keyword (security): 12.5.1.1. tcpd access control files (TCP/IP Network Administration)
- local mailer: 10.5.8. Defining Mailers (TCP/IP Network Administration)
- local name server: 6.2.2. Local Name Server (DNS and Bind)
- 12.5.3. Switching Name Servers (DNS and Bind)
- local names, looking up
- local network interface: 17.1.1. Local network interface (Managing NFS and NIS)
- local newsgroups: 2.3.2. Usenet News (Building Internet Firewalls)
- local option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- local password files: 3.3.1. Working with the maps (Managing NFS and NIS)
- Local Registration Files (LRF): 6.1.2. The netmon Process (Essential SNMP)
- local traffic: 8.3.1.2. Web mode (Network Troubleshooting Tools)
- 8.3.1.2. Web mode (Network Troubleshooting Tools)
- localas parameter
- LOCAL_CONFIG macro (sendmail): E.3. m4 sendmail Macros (TCP/IP Network Administration)
- LOCALDOMAIN environment variable: 8.2.1. The Resolver Configuration File (TCP/IP Network Administration)
- LOCALDOMAIN environment variable, setting local domain name with: 6.1.1. The Local Domain Name (DNS and Bind)
- LOCAL_DOMAIN macro (sendmail): E.3. m4 sendmail Macros (TCP/IP Network Administration)
- LocalForward: 9.2.1. Local Forwarding (SSH, The Secure Shell)
- localhost, converting from loopback address: 8.3.5. The named.local File (TCP/IP Network Administration)
- localhost file: 8.3. Configuring named (TCP/IP Network Administration)
- localhost (named address match list): 10.1. Address Match Lists and ACLs (DNS and Bind)
- local_IP_address:remote_IP_address option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- localities, domains named after: 3.2.3. Back in the U.S.A. (DNS and Bind)
- LOCAL_NET_CONFIG macro (sendmail): E.3. m4 sendmail Macros (TCP/IP Network Administration)
- localnets (named address match list): 10.1. Address Match Lists and ACLs (DNS and Bind)
- LOCAL_RULE_n macro (sendmail): E.3. m4 sendmail Macros (TCP/IP Network Administration)
- LOCAL_RULESETS macro (sendmail): E.3. m4 sendmail Macros (TCP/IP Network Administration)
- LOCAL_USER
- Location directive (httpd.conf file): 11.3.4. Defining Where Things Are Stored (TCP/IP Network Administration)
- location, record for: 16.6.4. Location (DNS and Bind)
- lock daemon: 7.5.1. Lock and status daemons (Managing NFS and NIS)
- lock option (pppd command): 6.3.4. PPP Daemon Security (TCP/IP Network Administration)
- A.2. The PPP Daemon (TCP/IP Network Administration)
- lockd: 17.3.4. File Locking with NFS (Building Internet Firewalls)
- lockfiles: 12.5. Disk-Space Checker (Essential SNMP)
- 12.5. Disk-Space Checker (Essential SNMP)
- locking files: 7.5. File locking (Managing NFS and NIS)
- advisory locking: 11.1.3. Mandatory versus advisory locking (Managing NFS and NIS)
- mandatory locking: 11.1.3. Mandatory versus advisory locking (Managing NFS and NIS)
- NFS: 11.2. NFS and file locking (Managing NFS and NIS)
- NLM protocol: 11.2.1. The NLM protocol (Managing NFS and NIS)
- NLM, recovery: 11.2.2. NLM recovery (Managing NFS and NIS)
- overview: 11.1. What is file locking? (Managing NFS and NIS)
- re-establishing locks: 7.5.3. Recreating state information (Managing NFS and NIS)
- troubleshooting: 11.3. Troubleshooting locking problems (Managing NFS and NIS)
- unenforced locking: 11.1.3. Mandatory versus advisory locking (Managing NFS and NIS)
- Windows: 11.2.4. NFS and Windows lock semantics (Managing NFS and NIS)
- Windows/NT: 11.1.4. Windows/NT locking scheme (Managing NFS and NIS)
- log file parameter (smb.config file): 9.3.1. Configuring a Samba Server (TCP/IP Network Administration)
- log files: 10.2.2. Dynamic Update and Zone Data Files (DNS and Bind)
- 14.6.1. NFS server logging mechanics (Managing NFS and NIS)
- Apache, conditional logging: 11.3.8.2. Using conditional logging (TCP/IP Network Administration)
- Apache directives: 11.3.8.1. Defining the log file format (TCP/IP Network Administration)
- incremental zone transfers and: 10.4.2. IXFR Files (DNS and Bind)
- monitoring: 12.4.1. Know Your System (TCP/IP Network Administration)
- sendmail: E.2. The sendmail Command (TCP/IP Network Administration)
- share command: 9.1.2.1. The share command (TCP/IP Network Administration)
- xinetd: 12.5.2. Controlling Access with xinetd (TCP/IP Network Administration)
- log files and logging
- connection logging: 11.2.3. Other Approaches to Logging (Network Troubleshooting Tools)
- drec tool: 9.1.2.2. MGEN (Network Troubleshooting Tools)
- host traffic: 8.2. Host-Monitoring Tools (Network Troubleshooting Tools)
- information in log files: 2.2.5.3. Log files (Network Troubleshooting Tools)
- managing and tracking files: 11.2.2. Log File Management (Network Troubleshooting Tools)
- Microsoft Windows: 11.5. Microsoft Windows (Network Troubleshooting Tools)
- mrtg files: 8.4.1.1. mrtg configuration file (Network Troubleshooting Tools)
- netmon tool: 8.6. Microsoft Windows (Network Troubleshooting Tools)
- NTP events: 11.3. NTP (Network Troubleshooting Tools)
- other approaches to logging: 11.2.3. Other Approaches to Logging (Network Troubleshooting Tools)
- remote logging files: 11.2.1.2. Remote logging (Network Troubleshooting Tools)
- saving data to SQL databases: 8.3.1.2. Web mode (Network Troubleshooting Tools)
- saving screen display to files: 11.1.1. Automating Documentation (Network Troubleshooting Tools)
- syslog files: 11.2.1. syslog (Network Troubleshooting Tools)
- tcpwrappers tool: 11.2.3.1. tcpwrappers (Network Troubleshooting Tools)
- telnet sessions: 11.1.1. Automating Documentation (Network Troubleshooting Tools)
- tracking troubleshooting steps: 11.1. Communications Tools (Network Troubleshooting Tools)
- using files in troubleshooting: 11.2. Log Files and Auditing (Network Troubleshooting Tools)
- log option (share command): 9.1.2.1. The share command (TCP/IP Network Administration)
- log record fields: 14.6. NFS server logging (Managing NFS and NIS)
- logcheck management tool: 11.2.2. Log File Management (Network Troubleshooting Tools)
- A.4. Sources for Tools (Network Troubleshooting Tools)
- logfd option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- logfile option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- LogFormat directive (Apache): 11.3.8.1. Defining the log file format (TCP/IP Network Administration)
- logger command (syslog): 11.2.1. syslog (Network Troubleshooting Tools)
- logging: 7.4.15. Logging and Debugging (SSH, The Secure Shell)
- compile-time configuration: 4.1.5.14. Debug output (SSH, The Secure Shell)
- core dump files: 12.3. Throw Core (Essential SNMP)
- MRTG log files: 13.1. Using MRTG (Essential SNMP)
- 13.2. Viewing Graphs (Essential SNMP)
- Net-SNMP log files: 7.3.4. Net-SNMP (Formerly UCD-SNMP) (Essential SNMP)
- OpenView
- events: 10.2.1. HP OpenView (Essential SNMP)
- 10.2.2.2. Setting event categories (Essential SNMP)
- 10.2.2.4. Log messages, notifications, and automatic actions (Essential SNMP)
- traps: 10.2.1. HP OpenView (Essential SNMP)
- 10.2.2.4. Log messages, notifications, and automatic actions (Essential SNMP)
- variables: 10.2.2.4. Log messages, notifications, and automatic actions (Essential SNMP)
- RMON
- server: 5.8. History, Logging, and Debugging (SSH, The Secure Shell)
- logging changes (see change logs)
- logging messages (BIND 8/9): 7.5. Logging in BIND 8 and 9 (DNS and Bind)
- logging on
- logging queries: 14.2.4. Logging Queries (DNS and Bind)
- logging statement: 7.5. Logging in BIND 8 and 9 (DNS and Bind)
- logging statement (named command): C.2.6. The logging Statement (TCP/IP Network Administration)
- loghost (Solaris hostname): 3.2. The Host Table (TCP/IP Network Administration)
- logical and operator (&&): 5.4.2.4.4. Compound filters. (Network Troubleshooting Tools)
- logical network: 17.2. Network partitioning hardware (Managing NFS and NIS)
- logical not operator (!): 5.4.2.4.4. Compound filters. (Network Troubleshooting Tools)
- logical operators in filters: 5.4.2.4. Filtering (Network Troubleshooting Tools)
- 5.4.2.4.3. Packet characteristics. (Network Troubleshooting Tools)
- logical or operator (||): 5.4.2.4.4. Compound filters. (Network Troubleshooting Tools)
- logical symbols
- login activity, security considerations: 12.4.2.2. Checking login activity (TCP/IP Network Administration)
- login banners: 6.3. Device Identification (Network Troubleshooting Tools)
- login option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)
- login programs, compile-time configuration: 4.1.5.9. User logins and shells (SSH, The Secure Shell)
- login restrictions: 12.1. User-oriented network security (Managing NFS and NIS)
- login routines: 5.6. User Logins and Accounts (SSH, The Secure Shell)
- login scripts, PPP servers, configuring: 6.3.5. PPP Server Configuration (TCP/IP Network Administration)
- LoginGraceTime: 5.4.3.5. Failed logins (SSH, The Secure Shell)
- logins
- account and password expiration warnings: 5.6.2. Expired Account or Password (SSH, The Secure Shell)
- forbidding: 4.1.5.10. Forbidding logins (SSH, The Secure Shell)
- "message of the day": 5.6.1. Welcome Messages for the User (SSH, The Secure Shell)
- remote: 2.5.1. Remote Terminal Access and Command Execution (Building Internet Firewalls)
- 2.2. Remote Terminal Sessions with ssh (SSH, The Secure Shell)
- restricting to root: 5.6.4.1. /etc/nologin (SSH, The Secure Shell)
- selecting a program: 5.5.3. Selecting a Login Program (SSH, The Secure Shell)
- successful, from unexpected site: 26.2.4. The Good, the Bad, and the Ugly (Building Internet Firewalls)
- username syntax: 2.2. Remote Terminal Sessions with ssh (SSH, The Secure Shell)
- logins, recording: 12.2. Who's Logging into My Machine? (I-Am-in) (Essential SNMP)
- LogLevel: 5.8.3. Logging and OpenSSH (SSH, The Secure Shell)
- 7.4.15. Logging and Debugging (SSH, The Secure Shell)
- LOGONLY mode, default for traps: 10.2.6. Creating Events Within OpenView (Essential SNMP)
- LOGOUT command (IMAP): 3.4.3. Internet Message Access Protocol (TCP/IP Network Administration)
- logs: 7.3.1. Where will logs go, and how? (Building Internet Firewalls)
- 10.9.4. Safeguard the System Logs (Building Internet Firewalls)
- 22.1.1. syslog (Building Internet Firewalls)
- 27.5.4. Keeping Activity Logs (Building Internet Firewalls)
- of accepted/dropped packets: 8.8.7. It Should Be Able to Log Accepted and Dropped Packets (Building Internet Firewalls)
- backups and: 10.12.2. Do Secure Backups (Building Internet Firewalls)
- basic format: 14.6.3.1. Basic versus extended log format (Managing NFS and NIS)
- creating with SOCKS: 9.5.1. Versions of SOCKS (Building Internet Firewalls)
- cycling: 14.6.6. NFS log cycling (Managing NFS and NIS)
- enabling logging, share command: 14.6.1. NFS server logging mechanics (Managing NFS and NIS)
- extended format: 14.6.3.1. Basic versus extended log format (Managing NFS and NIS)
- filehandle, path mapping and: 14.6.5. Filehandle to path mapping (Managing NFS and NIS)
- memory required for: 26.1.3. Managing Your Disk Space (Building Internet Firewalls)
- 26.2.3. What Should You Watch For? (Building Internet Firewalls)
- network address translation: 5.4.2.4. Dynamic allocation of addresses interferes with logging (Building Internet Firewalls)
- NFS server logging
- nfslogd daemon: 14.6.4. The nfslogd daemon (Managing NFS and NIS)
- NIS: 3.3.9. The ypserv daemon (Managing NFS and NIS)
- proxy services: 5.3.1.1. Proxy services can be good at logging (Building Internet Firewalls)
- of router actions: 8.3.1. Logging Actions (Building Internet Firewalls)
- server logging, disabling: 14.6.9. Disabling NFS server logging (Managing NFS and NIS)
- servers: 14.6.1. NFS server logging mechanics (Managing NFS and NIS)
- setting up
- trimlog program for: B.6.10. trimlog (Building Internet Firewalls)
- unexpectedly deleted or modified: 26.2.4. The Good, the Bad, and the Ugly (Building Internet Firewalls)
- what to watch for: 26.2.3. What Should You Watch For? (Building Internet Firewalls)
- logupdown parameter (gated): B.8.4. The bgp Statement (TCP/IP Network Administration)
- Looked for PTR, Found CNAME message: 14.5.4. Resolver Reports "Looked for PTR, Found CNAME" (DNS and Bind)
- looking glass sites: 4.1.2. Complications with traceroute (Network Troubleshooting Tools)
- lookup operations
- lookups
- CNAME records and: 16.1.5. Looking Up CNAMEs (DNS and Bind)
- troubleshooting: 14.7.4. Lookups Take a Long Time (DNS and Bind)
- client: 3.3.9. The ypserv daemon (Managing NFS and NIS)
- DNS: 20.1.1. Packet Filtering Characteristics of DNS (Building Internet Firewalls)
- 20.1.4.3. Mismatched data between the hostname and IP address DNS trees (Building Internet Firewalls)
- loopback addresses: 9.2.4.2. Access control and the loopback address (SSH, The Secure Shell)
- 4.2.9. The Loopback Address (DNS and Bind)
- 6.1.4. The nameserver Directive (DNS and Bind)
- 2.2. The IP Address (TCP/IP Network Administration)
- 2.1.3. netstat (Network Troubleshooting Tools)
- converting to localhost: 8.3.5. The named.local File (TCP/IP Network Administration)
- localhost: 3.2. The Host Table (TCP/IP Network Administration)
- multiple nameserver directives and: 6.1.4. The nameserver Directive (DNS and Bind)
- named.conf file: 8.3.1.1. A caching-only server configuration (TCP/IP Network Administration)
- routing tables: 7.2. The Minimal Routing Table (TCP/IP Network Administration)
- LOOPBACK flag, ifconfig: 13.2.1.1. Examining interfaces (Managing NFS and NIS)
- loopback interface: 1.2.1. Frames and network interfaces (Managing NFS and NIS)
- loopback interface (Solaris), configuring: 6.1.1. The Interface Name (TCP/IP Network Administration)
- loopback interfaces: 8.2. Retrieving Multiple MIB Values (Essential SNMP)
- 3.3.2.4. Using ping (Network Troubleshooting Tools)
- loopback network: 4.2.9. The Loopback Address (DNS and Bind)
- loopback route: 2.4. The Routing Table (TCP/IP Network Administration)
- loose source routing: 4.1.2. Complications with traceroute (Network Troubleshooting Tools)
- loss, testing: 4.2.3.3. iperf (Network Troubleshooting Tools)
- lost datagrams: 2.1. SNMP and UDP (Essential SNMP)
- lost packets
- bing results: 4.2.2.3. bing (Network Troubleshooting Tools)
- packet capture results: 5.3. Capturing Data (Network Troubleshooting Tools)
- ping and: 3.3.2.2. Interpreting results (Network Troubleshooting Tools)
- spray tool calculations: 9.1.2.1. spray (Network Troubleshooting Tools)
- traceroute indicators: 4.1. Path Discovery with traceroute (Network Troubleshooting Tools)
- Lotus Notes: 16.5. Lotus Notes and Domino (Building Internet Firewalls)
- low-bandwidth networks, partitioning: 17.3. Network infrastructure (Managing NFS and NIS)
- lp files: 9.2.2. Line Printer Service (TCP/IP Network Administration)
- lpadmin command: 9.2.2. Line Printer Service (TCP/IP Network Administration)
- lpd: 9.2.1. Line Printer Daemon (TCP/IP Network Administration)
- lp/lpr printing systems: 17.6.1. lpr and lp (Building Internet Firewalls)
- lpq command: 9.2.1.2. Using LPD (TCP/IP Network Administration)
- lpr command: 3.5.2. Print Services (TCP/IP Network Administration)
- 9.2.1.2. Using LPD (TCP/IP Network Administration)
- lprm command: 9.2.1.2. Using LPD (TCP/IP Network Administration)
- lpsystem command: 9.2.2. Line Printer Service (TCP/IP Network Administration)
- lp/Systems file: 9.2.2. Line Printer Service (TCP/IP Network Administration)
- LRF (Local Registration Files): 6.1.2. The netmon Process (Essential SNMP)
- LSA (Link-State Advertisement): 7.4.3. Open Shortest Path First (TCP/IP Network Administration)
- lseek( ): 3.3.5. Map files (Managing NFS and NIS)
- lserver command (nslookup): 12.5.3. Switching Name Servers (DNS and Bind)
- lsh: 13.3. Table of Products (SSH, The Secure Shell)
- lsmod command (Linux): 5.1.1. Using Dynamically Loadable Modules (TCP/IP Network Administration)
- lsof open file tool
- L2TP (Layer 2 Transport Protocol): 14.12. Layer 2 Transport Protocol (L2TP) (Building Internet Firewalls)
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O'Reilly & Associates, Inc.
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