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Index: C

• configuration command
• • sendmail, 5.3.5. Class Macros
  • sendmail, 12.1.1. Declaring a Class
  • sendmail, 12.1.6. Add Class w to client.cf
  • sendmail, 14.6. Trusted User
  • sendmail, 32.1. Class Configuration Commands
  • sendmail, 32.1.1. The C Class Command
• flag : sendmail, 30.8. Alphabetized F= Flags
• flag
• • sendmail, 30.7. Pitfalls
  • sendmail, 30.8. Alphabetized F= Flags
• line (qf file) : sendmail, 23.9. The qf File Internals
• $c macro : sendmail, 31.10. Alphabetized Reference
• $C macro : sendmail, 31.10. Alphabetized Reference
• option : (see HoldExpensive (c) option)
• option : (see CheckpointInterval (C) option)
• developing language
• • Practical UNIX & Internet Security, 1.3. History of UNIX
  • Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
  • -Wall compiler option : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
• rule-testing command : sendmail, 38.2.2. Add to a Class with .C
• shell : (see csh)
• -c switch (sendmail) : sendmail, 36.7. Alphabetized Reference
• -C switch (sendmail)
• • sendmail, 5.2. The Minimal File
  • sendmail, 15.2. The Real Queue Directory
  • sendmail, 36.7. Alphabetized Reference
• audit : Practical UNIX & Internet Security, 10.1. The Basic Log Files
• C= equate : sendmail, 30.4. The Equates
• cable tester
• • TCP/IP Network Administration, 11.2. Diagnostic Tools
  • TCP/IP Network Administration, 11.3.1. The ping Command
  • TCP/IP Network Administration, 11.4.3. Checking the Interface with netstat
• cables
• • Category 5 : TCP/IP Network Administration, 11.4.4. Subdividing an Ethernet
  • checking
  • • TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections
    • TCP/IP Network Administration, 11.4.3. Checking the Interface with netstat
    • TCP/IP Network Administration, 11.4.4.1. Network hardware problems
  • network
  • • Practical UNIX & Internet Security, 12.2.4.2. Network cables
    • Practical UNIX & Internet Security, 12.3.1.5. Fiber optic cable
    • Practical UNIX & Internet Security, 12.3.1.1. Wiretapping
    • cutting : Practical UNIX & Internet Security, 25.1. Destructive Attacks
    • wiretapping : Practical UNIX & Internet Security, 12.3.1.1. Wiretapping
  • Unshielded Twisted Pair (UTP) : TCP/IP Network Administration, 11.4.4. Subdividing an Ethernet
• caching
• • Practical UNIX & Internet Security, 5.6. Device Files
  • TCP/IP Network Administration, 3.3. Domain Name Service
  • corruption : TCP/IP Network Administration, 11.6.3. Cache corruption
  • initialization file : TCP/IP Network Administration, 8.3.3. The Cache Initialization File
  • MX records : sendmail, 21.3.6. Caching MX Records
  • nameserver : Practical UNIX & Internet Security, 16.3.2. Security and Nameservice
  • servers : sendmail, 21.1. Overview
  • single answers : TCP/IP Network Administration, 3.3.4. BIND, resolver, and named
  • statement
  • • TCP/IP Network Administration, 8.3.1.1. Configuring a caching-only nameserver
    • TCP/IP Network Administration, C.2. named.boot Configuration Commands
• caching-only servers
• • TCP/IP Network Administration, 3.3.4. BIND, resolver, and named
  • TCP/IP Network Administration, 8.1.1. BIND Configurations
  • TCP/IP Network Administration, 8.3.1.1. Configuring a caching-only nameserver
• Caesar Cipher : Practical UNIX & Internet Security, 6.4.3. ROT13: Great for Encoding Offensive Jokes
• calculating costs of losses : Practical UNIX & Internet Security, 2.3.1. The Cost of Loss
• call forwarding : Practical UNIX & Internet Security, 14.5.4. Physical Protection of Modems
• Call Trace : Practical UNIX & Internet Security, 24.2.4. Tracing a Connection
• CALLBACK= command : Practical UNIX & Internet Security, 15.5.2. Permissions Commands
• callbacks
• • Practical UNIX & Internet Security, 14.4.2.
  • Practical UNIX & Internet Security, 14.6. Additional Security for Modems
  • BNU UUCP : Practical UNIX & Internet Security, 15.5.2. Permissions Commands
  • Version 2 UUCP : Practical UNIX & Internet Security, 15.4.1.5. Requiring callback
• Caller-ID (CNID)
• • Practical UNIX & Internet Security, 14.4.3. Caller-ID (CNID)
  • Practical UNIX & Internet Security, 14.6. Additional Security for Modems
  • Practical UNIX & Internet Security, 24.2.4. Tracing a Connection
• Canada, export control in : Practical UNIX & Internet Security, 6.7.2. Cryptography and Export Controls
• cannot connect error : TCP/IP Network Administration, 3.4.1. Simple Mail Transfer Protocol
• /canon rule-testing command : sendmail, 38.5.1. Canonify a Host with /canon
• canonical name : sendmail, 7.3.1. The hostname
• • CNAME resource records
  • • sendmail, 21.3.2. MX to CNAME Causes Extra Lookups
    • sendmail, 34.8. Alphabetized Reference
    • TCP/IP Network Administration, 8.3.6. The named.hosts File
    • TCP/IP Network Administration, 10.7.1. Modifying Local Information
    • TCP/IP Network Administration, C.3.1.5. Canonical Name record
  • determining with DNS : sendmail, 21.2.1. Determine the Local Canonical Name
  • host : sendmail, 31.10. Alphabetized Reference
  • local : (see $j macro)
• canonicalization
• • sendmail, 17.2.1. Is the Host Local?
  • sendmail, 38.5.1. Canonify a Host with /canon
  • $[ and $] operators and
  • • sendmail, 19.6. Alphabetized m4 Macros
    • sendmail, 21.2.4. The $[ and $] Operators
    • sendmail, 28.6.6. Canonicalize Hostname: $[ and $]
    • sendmail, 33.4.3. $[ and $]: A Special Case
  • nocanonify feature : sendmail, 19.6. Alphabetized m4 Macros
• capitalization
• • aliases : sendmail, 3.1.1. The Aliases File
  • database keys
  • • sendmail, 33.2.1.2. -f don't fold uppercase to lowercase
    • sendmail, 33.3.4.3. -f don't fold keys to lowercase (V8.1 and above)
  • hostnames : sendmail, 30.8. Alphabetized F= Flags
  • macro names and : sendmail, 7.2. Defining Macros
  • usernames
  • • Practical UNIX & Internet Security, 3.1. Usernames
    • sendmail, 30.8. Alphabetized F= Flags
• capturing intruders : Building Internet Firewalls, 13.3. Pursuing and Capturing the
• carbon copies : sendmail, 35.10. Alphabetized Reference
• carbon monoxide : Practical UNIX & Internet Security, 12.2.1.2. Smoke
• caret (^) in encrypted messages : Practical UNIX & Internet Security, 6.2. What Is Encryption?
• carrier-detect (DCD) indicator, monitoring : TCP/IP Network Administration, 6.3.3. chat
• case : (see capitalization)
• cat command
• • Practical UNIX & Internet Security, 3.2.2. The /etc/passwd File
  • Practical UNIX & Internet Security, 15.4.3. L.cmds: Providing Remote Command Execution
  • -ve option : Practical UNIX & Internet Security, 5.5.4.1. The ncheck command
  • -v option : Practical UNIX & Internet Security, 24.4.1.7. Hidden files and directories
• cat-passwd command : Practical UNIX & Internet Security, 3.2.2. The /etc/passwd File
• catastrophe logs : Building Internet Firewalls, 5.8.1.4. Safeguard the system logs
• category data, DSN delivery : sendmail, 30.5.2.1. The $@ dsn part
• CBC (cipher block chaining)
• • Practical UNIX & Internet Security, 6.4.4.2. DES modes
  • Practical UNIX & Internet Security, 6.6.2. des: The Data Encryption Standard
• CBW (Crypt Breaker's Workbench) : Practical UNIX & Internet Security, 6.6.1.1. The crypt program
• "Cc:" header line : sendmail, 35.10. Alphabetized Reference
• CCTA IT Security & Infrastructure Group : Practical UNIX & Internet Security, F.3.4.39. UnisysUK: other government
• tutorial
• • Building Internet Firewalls, 5.3.3. What Hardware Configuration?
  • Practical UNIX & Internet Security, 9.1.2. Read-only Filesystems
• CDFs (context-dependent files)
• • Practical UNIX & Internet Security, 5.9.2. Context-Dependent Files
  • Practical UNIX & Internet Security, 24.4.1.7. Hidden files and directories
• ceilings, dropped : Practical UNIX & Internet Security, 12.2.3.1. Raised floors and dropped ceilings
• cellular telephones : Practical UNIX & Internet Security, 12.2.1.8. Electrical noise
• central administrator : (see system administration)
• CERCUS (Computer Emergency Response Committee for Unclassified Systems) : Practical UNIX & Internet Security, F.3.4.36. TRW Network Area and System Administrators
• Cerf, Vint : Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
• CERN : Practical UNIX & Internet Security, E.4.1. CERN HTTP Daemon
• • HTTP daemon : Building Internet Firewalls, B.5.2. CERN httpd
  • HTTP server : Building Internet Firewalls, 8.6.2. Proxying Characteristics of
• CERT (Computer Emergency Response Team)
• • Practical UNIX & Internet Security, 6.5.2. Using Message Digests
  • Practical UNIX & Internet Security, 27.3.5. Response Personnel?
  • Practical UNIX & Internet Security, F.3.4.1. All Internet sites
  • CERT-NL (Netherlands) : Practical UNIX & Internet Security, F.3.4.25. Netherlands: German government institutions
  • mailing list for : Practical UNIX & Internet Security, E.1.3.4. CERT-advisory
• CERT-CC response teams
• • Building Internet Firewalls, 13.4.4.2. CERT-CC and other incident response teams
  • Building Internet Firewalls, A.2.2. info.cert.org
  • Building Internet Firewalls, A.3.5. CERT-Advisory
  • Building Internet Firewalls, A.5.1. CERT-CC
  • contacting regarding incident : Building Internet Firewalls, 13.1.4.2. CERT-CC or other incident response
• cf directory : sendmail, 16.1. The cf/cf Directory
• • cf/cf directory : TCP/IP Network Administration, 10.4.1. Locating a Sample sendmail.cf File
  • cf/feature directory : TCP/IP Network Administration, E.3.2. FEATURE
  • cf/ostype directory : TCP/IP Network Administration, 10.4.1.1. Building a sendmail.cf with m4 macros
• _CF_DIR_ macro : sendmail, 19.2.1. Maintain local files with _CF_DIR_
• CFB (cipher feedback) : Practical UNIX & Internet Security, 6.4.4.2. DES modes
• CGI (Common Gateway Interface)
• • Building Internet Firewalls, 8.6.3.1. What can a malicious client do to
  • Practical UNIX & Internet Security, 18.1. Security and the World Wide Web
  • scripts
  • • Practical UNIX & Internet Security, 18.2. Running a Secure Server
    • Practical UNIX & Internet Security, 18.2.3. Writing Secure CGI Scripts and ProgramsThe
    • Practical UNIX & Internet Security, 18.2.4.1. Beware mixing HTTP with anonymous FTP
• cgi-bin directory : Practical UNIX & Internet Security, 18.2.2. Understand Your Server's Directory Structure
• cgm image subtype : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
• chacl command : Practical UNIX & Internet Security, 5.2.5.2. HP-UX access control lists
• Challenge Handshake Authentication Protocol : (see CHAP)
• challenge string : TCP/IP Network Administration, 6.3.4. PPP Daemon Security
• challenge-response system
• • Building Internet Firewalls, 10.2.2. Something You Know
  • Building Internet Firewalls, 10.3.3. Challenge-Response Schemes
• change detection
• • Practical UNIX & Internet Security, 9.2. Detecting Change
  • Practical UNIX & Internet Security, 9.3. A Final Note
• CHAP (Challenge Handshake Authentication Protocol)
• • TCP/IP Network Administration, 6.3.4. PPP Daemon Security
  • TCP/IP Network Administration, A.2. The PPP Daemon
• chap-secrets file : TCP/IP Network Administration, 6.3.4. PPP Daemon Security
• Chapman, Brent : TCP/IP Network Administration, 12.1.1. Assessing the Threat
• character devices : Practical UNIX & Internet Security, 5.6. Device Files
• character set : sendmail, 30.4. The Equates
• character-type arguments : sendmail, 34.5. Option Argument Types
• chat groups, harassment via : Practical UNIX & Internet Security, 26.4.7. Harassment, Threatening Communication, and Defamation
• chat script
• • TCP/IP Network Administration, 6.3.3. chat
  • TCP/IP Network Administration, A.2. The PPP Daemon
  • TCP/IP Network Administration, A.3. chat
• chatkey : TCP/IP Network Administration, A.1.1. The dip Script File
• chdir command
• • Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
  • Practical UNIX & Internet Security, 25.2.2.8. Tree-structure attacks
• check_compat rule set : sendmail, 29.10.4. The check_compat Rule Set
• check_mail rule set
• • sendmail, 20.2.6. Reject Mail from Spamming or Mail-bombing Sites
  • sendmail, 29.10.1. The check_mail Rule Set
• check_rcpt rule set : sendmail, 29.10.2. The check_rcpt Rule Set
• check_relay rule set : sendmail, 29.10.3. The check_relay Rule Set
• CheckAliases (n) option
• • sendmail, 24.5.2. Check the Right Side of Aliases
  • sendmail, 34.8. Alphabetized Reference
• checkcompat()
• • sendmail, 20. The checkcompat() tutorial
  • sendmail, 20.3. Alphabetized V8.8 Subroutines
• checking : (see testing)
• checklists for detecting changes
• • Practical UNIX & Internet Security, 9.2.2. Checklists and Metadata
  • Practical UNIX & Internet Security, 9.2.3. Checksums and Signatures
• CheckpointInterval (C) option : sendmail, 34.8. Alphabetized Reference
• checksums
• • 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
  • • TCP/IP Network Administration, 4.2.1. Obtaining an IP Address
    • TCP/IP Network Administration, 5.3.1.1. Options
  • using Tripwire for : Building Internet Firewalls, 5.8.5.1. Auditing packages
• Chesson, Greg : Practical UNIX & Internet Security, 15.2. Versions of UUCP
• chfn command : Practical UNIX & Internet Security, 8.2. Monitoring File Format
• chgrp command : Practical UNIX & Internet Security, 5.8. chgrp: Changing a File's Group
• child processes : Practical UNIX & Internet Security, C.2. Creating Processes
• child, sendmail : sendmail, 30.6.2. The Child
• chkey command : Practical UNIX & Internet Security, 19.3.1.1. Proving your identity
• chmod command
• • Practical UNIX & Internet Security, 5.2.1. chmod: Changing a File's Permissions
  • Practical UNIX & Internet Security, 5.2.4. Using Octal File Permissions
  • Practical UNIX & Internet Security, 8.3. Restricting Logins
  • -A option : Practical UNIX & Internet Security, 5.2.5.2. HP-UX access control lists
  • -f option : Practical UNIX & Internet Security, 5.2.1. chmod: Changing a File's Permissions
  • -h option : Practical UNIX & Internet Security, 5.2.1. chmod: Changing a File's Permissions
  • -R option : Practical UNIX & Internet Security, 5.2.1. chmod: Changing a File's Permissions
• choke points
• • Building Internet Firewalls, 3.3. Choke Point
  • Building Internet Firewalls, 9.2.3.3. Choke point
  • (see also firewalls)
  • (see also interior router)
  • using router as : Building Internet Firewalls, 6.1. Why Packet Filtering?
• choot mechanism : Building Internet Firewalls, 5.3.1. What Operating System?
• chown command
• • Practical UNIX & Internet Security, 5.7. chown: Changing a File's Owner
  • Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
• chroot command
• • Building Internet Firewalls, 8.2.1.3. Providing anonymous
  • Practical UNIX & Internet Security, 8.1.5. Restricted Filesystem
  • Practical UNIX & Internet Security, 8.1.5.2. Checking new software
  • Practical UNIX & Internet Security, 11.1.4. Trojan Horses
  • Practical UNIX & Internet Security, 23.4.1. Using chroot()
  • with anonymous FTP : Practical UNIX & Internet Security, 17.3.2.6. Setting up anonymous FTP with the standard UNIX FTP
• chrootuid daemon
• • Building Internet Firewalls, B.6.3. chrootuid
  • Practical UNIX & Internet Security, E.4.2. chrootuid
• chsh command : Practical UNIX & Internet Security, 8.7.1. Integrating One-time Passwords with UNIX
• CIAC (Computer Incident Advisory Capability) : Practical UNIX & Internet Security, F.3.4.43. U.S. Department of Energy
• CIDR (Classless Inter-Domain Routing)
• • Practical UNIX & Internet Security, 16.2.1.1. IP networks
  • Practical UNIX & Internet Security, 16.2.1.3. CIDR addresses
  • TCP/IP Network Administration, 2.2.2. Classless IP Addresses
  • address mask
  • • TCP/IP Network Administration, 2.2. The IP Address
    • TCP/IP Network Administration, 2.2.2. Classless IP Addresses
  • blocks : TCP/IP Network Administration, B.11. The Aggregate Statements
• cigarettes : Practical UNIX & Internet Security, 12.2.1.2. Smoke
• cipher
• • Practical UNIX & Internet Security, 6.4.3. ROT13: Great for Encoding Offensive Jokes
  • TCP/IP Network Administration, 12.6. Encryption
  • (see also cryptography; encryption)
  • block chaining (CBC)
  • • Practical UNIX & Internet Security, 6.4.4.2. DES modes
    • Practical UNIX & Internet Security, 6.6.2. des: The Data Encryption Standard
  • ciphertext
  • • Practical UNIX & Internet Security, 6.2. What Is Encryption?
    • Practical UNIX & Internet Security, 8.6.1. The crypt()
  • feedback (CFB) : Practical UNIX & Internet Security, 6.4.4.2. DES modes
• circuit-level proxy servers : Building Internet Firewalls, 7.3.1. Application-Level Versus Circuit-Level
• CISCO : Practical UNIX & Internet Security, F.3.4.8. CISCO Systems
• Cisco routers
• • Building Internet Firewalls, 6.5. Conventions for Packet Filtering
  • TCP/IP Network Administration, 12.5. Access Control
• civil actions (lawsuits) : Practical UNIX & Internet Security, 26.3. Civil Actions
• class command : sendmail, 12.1. The Class Command
• class macros
• • sendmail, 5.3.5. Class Macros
  • sendmail, 12. Class
  • sendmail, 32. Class Macros
  • m4 and : sendmail, 32.3. Class with m4
• class w, defining : TCP/IP Network Administration, 10.7.1. Modifying Local Information
• class= equate (syslog output) : sendmail, 26.1.3.1. class= the queue class
• classes
• • adding to : sendmail, 38.2.2. Add to a Class with .C
  • of addresses : (see addresses, classes of)
  • database : sendmail, 33.8. Alphabetized Reference
  • declaring : sendmail, 32.1. Class Configuration Commands
  • looking up words in : sendmail, 20.3. Alphabetized V8.8 Subroutines
  • name hashing algorithm : sendmail, 32.2.4. Class Name Hashing Algorithm
  • storing in files : sendmail, 12.2. The File Form of Class
• ClassFactor (z) option : sendmail, 34.8. Alphabetized Reference
• classified data and breakins
• • Practical UNIX & Internet Security, 26.1. Legal Options After a Break-in
  • Practical UNIX & Internet Security, 26.2.2. Federal Jurisdiction
• Classless Inter-Domain Routing (CIDR)
• • Practical UNIX & Internet Security, 16.2.1.1. IP networks
  • Practical UNIX & Internet Security, 16.2.1.3. CIDR addresses
  • TCP/IP Network Administration, 2.2.2. Classless IP Addresses
  • address mask
  • • TCP/IP Network Administration, 2.2. The IP Address
    • TCP/IP Network Administration, 2.2.2. Classless IP Addresses
  • blocks : TCP/IP Network Administration, B.11. The Aggregate Statements
• clear text
• • Practical UNIX & Internet Security, 8.6.1. The crypt()
  • TCP/IP Network Administration, 12.6. Encryption
• Clear to Send (CTS) : Practical UNIX & Internet Security, 14.3. The RS-232 Serial Protocol
• client
• • authentication, network filesystems and : Building Internet Firewalls, 2.12. Network File Systems
  • flooding : Practical UNIX & Internet Security, 16.3.2. Security and Nameservice
  • internal versus external : Building Internet Firewalls, 7.4.5. Internal Versus External Clients
  • NIS : (see NIS)
  • port numbers : Building Internet Firewalls, 8. Configuring Internet Services
  • software for proxying : Building Internet Firewalls, 7.2.1. Using Custom Client Software for
• client statement : TCP/IP Network Administration, B.8.10. The routerdiscovery Statement
• client.cf : sendmail, A. The client.cf File
• client/server model : Practical UNIX & Internet Security, 16.2.5. Clients and Servers
• ${client_addr} macro : sendmail, 31.10. Alphabetized Reference
• ${client_name} macro : sendmail, 31.10. Alphabetized Reference
• clock, system
• • Practical UNIX & Internet Security, 5.1.5. File Times
  • Practical UNIX & Internet Security, 17.3.14. Network Time Protocol (NTP) (UDP Port 123)
  • configuring : Building Internet Firewalls, 8.13. Network Time Protocol (NTP)
  • for random seeds : Practical UNIX & Internet Security, 23.8. Picking a Random Seed
  • resetting : Practical UNIX & Internet Security, 9.2.3. Checksums and Signatures
  • setting : Building Internet Firewalls, 2.11. Time Service
  • Secure RPC timestamp : Practical UNIX & Internet Security, 19.3.1.3. Setting the window
• clogging : Practical UNIX & Internet Security, 25.3.4. Clogging
• CNAME resource records
• • sendmail, 21.3.2. MX to CNAME Causes Extra Lookups
  • sendmail, 34.8. Alphabetized Reference
  • TCP/IP Network Administration, 8.3.6. The named.hosts File
  • TCP/IP Network Administration, 10.7.1. Modifying Local Information
  • TCP/IP Network Administration, C.3.1.5. Canonical Name record
• CNID (Caller-ID)
• • Practical UNIX & Internet Security, 14.4.3. Caller-ID (CNID)
  • Practical UNIX & Internet Security, 14.6. Additional Security for Modems
  • Practical UNIX & Internet Security, 24.2.4. Tracing a Connection
• CO2 system (for fires) : Practical UNIX & Internet Security, 12.2.1.1. Fire
• COAST (Computer Operations, Audit, and Security Technology)
• • Building Internet Firewalls, A.1.2. COAST
  • Building Internet Firewalls, A.2.1. coast.cs.purdue.edu
  • Practical UNIX & Internet Security, E.3.2. COAST
  • Practical UNIX & Internet Security, E.4. Software Resources
• code breaking : (see cryptography)
• codetutorials : Practical UNIX & Internet Security, 8.7.3. Code Books
• CodeCenter : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
• codes : (see numbers)
• cold, extreme : Practical UNIX & Internet Security, 12.2.1.6. Temperature extremes
• Collis field : TCP/IP Network Administration, 11.4.3. Checking the Interface with netstat
• collision rate
• • TCP/IP Network Administration, 6.1.1. Determining the Interface Name
  • TCP/IP Network Administration, 11.4.3. Checking the Interface with netstat
  • reducing : TCP/IP Network Administration, 11.4.4. Subdividing an Ethernet
• colon (:)
• • in addresses
  • • sendmail, 17.1.2.1. A rule to handle List:;
    • sendmail, 34.8. Alphabetized Reference
  • beginning and ending fields
  • • TCP/IP Network Administration, 9.2.1. The printcap File
    • TCP/IP Network Administration, 9.2.2. Solaris Line Printer Service
  • separating parameters : TCP/IP Network Administration, 9.4. A BOOTP Server
• ColonOkInAddr option : sendmail, 34.8. Alphabetized Reference
• columns, database key
• • sendmail, 33.3.4.4. -k specify column for key (V8.7 and above)
  • sendmail, 33.3.4.11. -v specify the value's column (V8.7 and above)
• com domain : TCP/IP Network Administration, 3.3.1. The Domain Hierarchy
• command channel attacks : Building Internet Firewalls, 8.1. Electronic Mail
• command execution : Building Internet Firewalls, 2.3. Remote Terminal Access and Command
• command line : sendmail, 4. How to Run sendmail
• • bugs : Building Internet Firewalls, 8.1. Electronic Mail
  • processing : sendmail, 36.4. Processing the Command Line
  • troubleshooting : sendmail, 36.6. Pitfalls
• command shells : (see shells)
• commands
• • Practical UNIX & Internet Security, 8.1.3. Accounts That Run a Single Command
  • (see also under specific command name)
  • accounts running single : Practical UNIX & Internet Security, 8.1.3. Accounts That Run a Single Command
  • in addresses : Practical UNIX & Internet Security, 15.7. Early Security Problems with UUCP
  • configuration
  • • sendmail, 5.1. Overview
    • sendmail, 27.1. Overall Syntax
  • in <Directory> blocks : Practical UNIX & Internet Security, 18.3.2. Commands Within the <Directory>
  • editor, embedded : Practical UNIX & Internet Security, 11.5.2.7. Other initializations
  • incorrect usage error : sendmail, 36.5.10. EX_USAGE A Command Was Used Incorrectly
  • remote execution of
  • • Practical UNIX & Internet Security, 15.1.2. uux Command
    • Practical UNIX & Internet Security, 15.4.3. L.cmds: Providing Remote Command Execution
    • Practical UNIX & Internet Security, 17.3.17. rexec (TCP Port 512)
  • running simultaneously
  • • Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
    • (see also multitasking)
• COMMANDS= command : Practical UNIX & Internet Security, 15.5.2. Permissions Commands
• commenting out lines : Building Internet Firewalls, 5.8.2.2. How to disable services
• commenting out services : Practical UNIX & Internet Security, 17.3. Primary UNIX Network Services
• comments
• • sendmail, 5.2.2. Comments
  • sendmail, 6.3.2. Adding Comments
  • in BNU UUCP : Practical UNIX & Internet Security, 15.5.1.3. A Sample Permissions file
  • in header fields : sendmail, 35.3.4. Comments in the Header Field
  • in :include: lists : sendmail, 25.2.1. Comments in :include: Lists
  • in m4 files : sendmail, 19.5. Pitfalls
  • in rule definitions : sendmail, 8.4. Rules
  • in sendmail.cf file
  • • sendmail, 3.1. Role in the Filesystem
    • sendmail, 5.1. Overview
    • sendmail, 27.2. Comments
  • stripping from headers : sendmail, 30.8. Alphabetized F= Flags
• "Comments:" header line : sendmail, 35.10. Alphabetized Reference
• commercial authentication systems : Building Internet Firewalls, 10.4.3. Commercial Solutions
• Commercial Information Exchange (CIX) : TCP/IP Network Administration, 1.1. TCP/IP and the Internet
• Common Gateway Interface (CGI)
• • Building Internet Firewalls, 8.6.3.1. What can a malicious client do to
  • Practical UNIX & Internet Security, 18.1. Security and the World Wide Web
  • scripts
  • • Practical UNIX & Internet Security, 18.2. Running a Secure Server
    • Practical UNIX & Internet Security, 18.2.3. Writing Secure CGI Scripts and ProgramsThe
    • Practical UNIX & Internet Security, 18.2.4.1. Beware mixing HTTP with anonymous FTP
• communications
• • interpersonal : (see email)
  • modems : (see modems)
  • national telecommunications : Practical UNIX & Internet Security, 26.2.2. Federal Jurisdiction
  • threatening : Practical UNIX & Internet Security, 26.4.7. Harassment, Threatening Communication, and Defamation
• comp.security newsgroups : TCP/IP Network Administration, 12.1.2.2. Use mailing lists to distribute information
• comparison copies
• • Practical UNIX & Internet Security, 9.2.1. Comparison Copies
  • Practical UNIX & Internet Security, 9.2.1.3. rdist
• compatibility between sendmail versions
• • sendmail, 5.2.1. Version
  • sendmail, 27.5. The V Configuration Command
  • sendmail, D.2. Backward Compatibility
• compiling db library package : sendmail, C.3. Compile and Install
• compiling sendmail : sendmail, 2.5. Build
• • enabling databases : sendmail, 33.1. Enable at Compile Time
  • macros for : sendmail, 18.8. Alphabetized Reference
  • vendor copies versus : sendmail, 18.2. Vendor Versus Compiling
• completion, command option : sendmail, 34.1.2.1. Multicharacter name shorthand
• compress program : Practical UNIX & Internet Security, 6.6.1.2. Ways of improving the security of crypt
• Compressed SLIP (CSLIP) : Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
• Computer Emergency Response Committee for Unclassified Systems (CERCUS) : Practical UNIX & Internet Security, F.3.4.36. TRW Network Area and System Administrators
• Computer Emergency Response Team (CERT) advisories
• • Practical UNIX & Internet Security, 6.5.2. Using Message Digests
  • Practical UNIX & Internet Security, 27.3.5. Response Personnel?
  • Practical UNIX & Internet Security, F.3.4.1. All Internet sites
  • TCP/IP Network Administration, 12.1.2.2. Use mailing lists to distribute information
  • CERT-NL (Netherlands) : Practical UNIX & Internet Security, F.3.4.25. Netherlands: German government institutions
  • mailing list for : Practical UNIX & Internet Security, E.1.3.4. CERT-advisory
• Computer Incident Advisory Capability (CIAC) : Practical UNIX & Internet Security, F.3.4.43. U.S. Department of Energy
• computer networks : Practical UNIX & Internet Security, 1.4.3. Add-On Functionality Breeds Problems
• Computer Security Institute (CSI) : Practical UNIX & Internet Security, F.1.3. Computer Security Institute (CSI)
• Computer Security Resource Clearinghouse : TCP/IP Network Administration, 13.1. The World Wide Web
• computers
• • assigning UUCP name : Practical UNIX & Internet Security, 15.5.2. Permissions Commands
  • auxiliary ports : Practical UNIX & Internet Security, 12.3.1.4. Auxiliary ports on terminals
  • backing up individual : Practical UNIX & Internet Security, 7.2.1. Individual Workstation
  • computer-to-computer services, providing : TCP/IP Network Administration, 9. Configuring Network Servers
  • contacting administrator of : Practical UNIX & Internet Security, 24.2.4.2. How to contact the system administrator of a computer
  • cutting cables to : Practical UNIX & Internet Security, 25.1. Destructive Attacks
  • failure of : Practical UNIX & Internet Security, 7.1.1.1. A taxonomy of computer failures
  • hostnames for
  • • Practical UNIX & Internet Security, 16.2.3. Hostnames
    • Practical UNIX & Internet Security, 16.2.3.1. The /etc/hosts file
  • modems : (see modems)
  • multiple screens : Practical UNIX & Internet Security, 12.3.4.3. Multiple screens
  • multiple suppliers of : Practical UNIX & Internet Security, 18.6. Dependence on Third Parties
  • non-citizen access to : Practical UNIX & Internet Security, 26.4.1. Munitions Export
  • operating after breakin : Practical UNIX & Internet Security, 24.6. Resuming Operation
  • portable : Practical UNIX & Internet Security, 12.2.6.3. Portables
  • remote command execution : Practical UNIX & Internet Security, 17.3.17. rexec (TCP Port 512)
  • running NIS+ : Practical UNIX & Internet Security, 19.5.5. NIS+ Limitations
  • screen savers : Practical UNIX & Internet Security, 12.3.5.2. X screen savers
  • security
  • • culture of : Practical UNIX & Internet Security, D.1.10. Understanding the Computer Security "Culture"
    • four steps toward : Practical UNIX & Internet Security, 2.4.4.7. Defend in depth
    • physical : Practical UNIX & Internet Security, 12.2.6.1. Physically secure your computer
    • references for : Practical UNIX & Internet Security, D.1.7. General Computer Security
    • resources on : Practical UNIX & Internet Security, D.1.1. Other Computer References
  • seized as evidence : Practical UNIX & Internet Security, 26.2.4. Hazards of Criminal Prosecution
  • transferring files between : Practical UNIX & Internet Security, 15.1.1. uucp Command
  • trusting
  • • Practical UNIX & Internet Security, 27.1. Can you Trust Your Computer?
    • Practical UNIX & Internet Security, 27.1.3. What the Superuser Can and Cannot Do
  • unattended
  • • Practical UNIX & Internet Security, 12.3.5. Unattended Terminals
    • Practical UNIX & Internet Security, 12.3.5.2. X screen savers
  • unplugging : Practical UNIX & Internet Security, 24.2.5. Getting Rid of the Intruder
  • vacuums for : Practical UNIX & Internet Security, 12.2.1.3. Dust
  • vandalism of : (see vandalism)
  • virtual : (see Telnet service)
  • viruses : (see viruses)
• computing base (TCB) : Practical UNIX & Internet Security, 8.5.3.2. Trusted computing base
• conditionals in macro definitions
• • sendmail, 14.1.3. Testing So Far
  • sendmail, 31.6. Macro Conditionals: $?, $|, and $.
  • TCP/IP Network Administration, 10.5.2.1. Conditionals
• conf directory
• • Practical UNIX & Internet Security, 18.2.2.1. Configuration files
  • TCP/IP Network Administration, 5.3. The BSD Kernel Configuration File
  • conf/access.conf : (see access.conf file)
  • conf/master directory : TCP/IP Network Administration, 8.3.4. The named.local File
  • conf/srm.conf file : Practical UNIX & Internet Security, 18.3.1. The access.conf and .htaccess Files
  • conf.c file
  • • sendmail, 18.3.3. What to Tune
    • sendmail, 35.5. Header Behavior in conf.c
  • conf.h file : sendmail, 18.3.3. What to Tune
• conferencing services, real-time
• • Building Internet Firewalls, 2.8. Real-Time Conferencing
  • Building Internet Firewalls, 8.9. Real-Time Conferencing Services
• confidence factor : TCP/IP Network Administration, 11.1.1. Troubleshooting Hints
• confidentiality : (see encryption; privacy)
• configuration
• • Archie : Building Internet Firewalls, 8.7.3. Archie
  • audit packages : Building Internet Firewalls, 5.8.5.2. Use the auditing packages
  • clocks : Building Internet Firewalls, 8.13. Network Time Protocol (NTP)
  • commands for
  • • sendmail, 5.1. Overview
    • sendmail, 27.1. Overall Syntax
  • DNS (Domain Name Service) : Building Internet Firewalls, 8.10. Domain Name System
  • • in screened host architecture : Building Internet Firewalls, 9.2.1.6. DNS
    • in screened subnet architecture : Building Internet Firewalls, 9.1.1.6. DNS
  • email : Building Internet Firewalls, 8.1. Electronic Mail
  • errors : Practical UNIX & Internet Security, 9.1. Prevention
  • exterior routers : Building Internet Firewalls, 9.1.2.2. Exterior Router
  • files : Practical UNIX & Internet Security, 11.5.3. Abusing Automatic Mechanisms
  • • logging : Practical UNIX & Internet Security, 10.7.2.2. Informational material
    • MCSA web server : Practical UNIX & Internet Security, 18.2.2.1. Configuration files
    • UUCP version differences : Practical UNIX & Internet Security, 15.2. Versions of UUCP
  • FSP (File Service Protocol) : Building Internet Firewalls, 8.2.3. File Service Protocol (FSP)
  • FTP (File Transfer Protocol) : Building Internet Firewalls, 8.2.1. File Transfer Protocol
  • • in screened host architecture : Building Internet Firewalls, 9.2.1.2. FTP
    • in screened subnet architecture : Building Internet Firewalls, 9.1.1.2. FTP
  • Gopher : Building Internet Firewalls, 8.7.1. Gopher
  • hardware : Building Internet Firewalls, 5.3.3. What Hardware Configuration?
  • HTTP (Hypertext Transfer Protocol)
  • • in screened host architecture : Building Internet Firewalls, 9.2.1.5. HTTP
    • in screened subnet architecture : Building Internet Firewalls, 9.1.1.5. HTTP
  • hub : sendmail, 15.4. Hub Accepts Mail for Client
  • information lookup services : Building Internet Firewalls, 8.8. Information Lookup Services
  • interior router : Building Internet Firewalls, 9.1.2.1. Interior Router
  • Internet services : Building Internet Firewalls, 8. Configuring Internet Services
  • IRC (Internet Relay Chat) : Building Internet Firewalls, 8.9.2. Internet Relay Chat
  • kernel : Building Internet Firewalls, 5.8.4.1. Reconfigure and rebuild the kernel
  • labeling system : Building Internet Firewalls, 13.5.2. Labeling and Diagraming Your System
  • machine : Building Internet Firewalls, 5.8.4. Reconfiguring for Production
  • MBONE (Multicast Backbone) : Building Internet Firewalls, 8.9.3. The Multicast Backbone (MBONE)
  • network management services : Building Internet Firewalls, 8.12. Network Management Services
  • NFS (Network File System) : Building Internet Firewalls, 8.14. Network File System
  • NIS/YP (Network Information Service) : Building Internet Firewalls, 8.15. Network Information Service/Yellow
  • NNTP (Network News Transfer Protocol) : Building Internet Firewalls, 8.5. Network News Transfer Protocol
  • • in screened host architecture : Building Internet Firewalls, 9.2.1.4. NNTP
    • in screened subnet architecture : Building Internet Firewalls, 9.1.1.4. NNTP
  • packet filtering router : Building Internet Firewalls, 6.2. Configuring a Packet Filtering
  • parameters for (in dhcpd) : TCP/IP Network Administration, D.3.2. Configuration Parameters
  • ping program : Building Internet Firewalls, 8.12.3. ping
  • printing protocols : Building Internet Firewalls, 8.17. Printing Protocols (lpr and lp)
  • problems : TCP/IP Network Administration, 11.4.1. Troubleshooting with the ifconfig Command
  • r commands : Building Internet Firewalls, 8.4.1. BSD
  • real-time conferencing services : Building Internet Firewalls, 8.9. Real-Time Conferencing Services
  • RIP (Routing Information Protocol) : Building Internet Firewalls, 8.12.2. Routing Information Protocol
  • sendmail
  • • sendmail, 2.4. Preliminaries
    • sendmail, 18.6. Install sendmail
    • sendmail, 19.6. Alphabetized m4 Macros
    • (see also sendmail.cf configuration file)
  • servers : TCP/IP Network Administration, 3.5. Configuration Servers
  • simplifying management of : Practical UNIX & Internet Security, 9.1.2. Read-only Filesystems
  • SMTP (Simple Mail Transfer Protocol)
  • • in screened host architecture : Building Internet Firewalls, 9.2.1.3. SMTP
    • in screened subnet architecture : Building Internet Firewalls, 9.1.1.3. SMTP
    • with firewalls : Building Internet Firewalls, 8.1.1.6. Configuring SMTP to
  • SNMP (Simple Network Management Protocol) : Building Internet Firewalls, 8.12.1. Simple Network Management
  • syslog : Building Internet Firewalls, 8.11. syslog
  • system, prerequisites for : TCP/IP Network Administration, 4. Getting Started
  • Telnet : Building Internet Firewalls, 8.3. Terminal Access (Telnet)
  • • in screened host architecture : Building Internet Firewalls, 9.2.1.1. Telnet
    • in screened subnet architecture : Building Internet Firewalls, 9.1.1.1. Telnet
  • TFTP (Trivial File Transport Protocol) : Building Internet Firewalls, 8.2.2. Trivial File Transfer Protocol
  • TNP (Network Time Protocol) : Building Internet Firewalls, 8.13. Network Time Protocol (NTP)
  • traceroute program : Building Internet Firewalls, 8.12.4. traceroute
  • UUCP (UNIX-to-UNIX Copy Protocol) : Building Internet Firewalls, 8.2.4. UNIX-to-UNIX
  • WAIS (Wide Area Information Servers) : Building Internet Firewalls, 8.7.2. Wide Area Information Servers
  • WWW (World Wide Web) and HTTP : Building Internet Firewalls, 8.6. World Wide Web (WWW) and HTTP
  • X11 Window wystem : Building Internet Firewalls, 8.16. X11 Window System
• connection cache
• • sendmail, 26.3.3.2. -- connection cache: --
  • sendmail, 34.6.5. Connection Caching
• connection command-line option, in pppd : TCP/IP Network Administration, 6.3.3. chat
• "Connection timed out" message : sendmail, 4.2. Verbose (-v)
• ConnectionCacheSize (k) option : sendmail, 34.8. Alphabetized Reference
• ConnectionCacheTimeout (K) option : sendmail, 34.8. Alphabetized Reference
• ConnectionRateThrottle option : sendmail, 34.8. Alphabetized Reference
• connections
• • between Internet and unbuilt bastion host : Building Internet Firewalls, 5.8. Building a Bastion Host
  • checking network : (see ping command)
  • disconnecting after incident : Building Internet Firewalls, 13.1.2. Disconnect or Shut Down, as
  • disconnecting machine : Building Internet Firewalls, 13.4.3. Planning for Disconnecting or
  • hijacking : Practical UNIX & Internet Security, 16.3. IP Security
  • killed by TCP : Building Internet Firewalls, 6.3.3.1. TCP
  • laundering : Practical UNIX & Internet Security, 16.1.1.1. Who is on the Internet?
  • multiple Internet : Building Internet Firewalls, 4.3.6. It's OK to Use
  • tracing
  • • Practical UNIX & Internet Security, 24.2.4. Tracing a Connection
    • Practical UNIX & Internet Security, 24.2.4.2. How to contact the system administrator of a computer
  • unidirectional versus multidirectional : Building Internet Firewalls, 7.4.2. Unidirectional Versus Multidirectional
  • unplugging : Practical UNIX & Internet Security, 24.2.5. Getting Rid of the Intruder
• connectivity
• • TCP/IP Network Administration, 1.7. Application Layer
  • (see also firewalls)
  • troubleshooting : TCP/IP Network Administration, 11.3. Testing Basic Connectivity
• connectors, network : Practical UNIX & Internet Security, 12.2.4.3. Network connectors
• consistency of software : Practical UNIX & Internet Security, 2.1. Planning Your Security Needs
• console device : Practical UNIX & Internet Security, 5.6. Device Files
• CONSOLE variable : Practical UNIX & Internet Security, 8.5.1. Secure Terminals
• constraining passwords : Practical UNIX & Internet Security, 8.8.2. Constraining Passwords
• consultants : Practical UNIX & Internet Security, 27.3.4. Your Consultants?
• content types : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
• "Content-Length:" header line
• • sendmail, 35.10. Alphabetized Reference
  • sendmail, D. Sun Enhancements
• "Content-Transfer-Encoding:" header line
• • sendmail, 35.10. Alphabetized Reference
  • TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
• "Content-Type:" header line
• • sendmail, 30.4. The Equates
  • sendmail, 32.5. Alphabetized Reference
  • sendmail, 34.8. Alphabetized Reference
  • sendmail, 35.10. Alphabetized Reference
  • TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
• context-dependent files (CDFs)
• • Practical UNIX & Internet Security, 5.9.2. Context-Dependent Files
  • Practical UNIX & Internet Security, 24.4.1.7. Hidden files and directories
• contiguous blocks : (see addresses, assigning)
• continuation lines : sendmail, 27.4. Continuation Lines
• control
• • information : TCP/IP Network Administration, 1.3. TCP/IP Protocol Architecture
  • statements (in gated) : TCP/IP Network Administration, B.10. Control Statements
• control characters
• • Practical UNIX & Internet Security, 3.1. Usernames
  • sendmail, 23.3.4. Unknown Control Character in qf File
• control headers : sendmail, 35.6.4. Identification and Control Headers
• convergence of routing, delays in : TCP/IP Network Administration, 7.4.1.1. Running RIP with routed
• converting
• • Japanese font conversion : sendmail, 36.7. Alphabetized Reference
  • macro names to integers : sendmail, 20.3. Alphabetized V8.8 Subroutines
• cookies
• • Practical UNIX & Internet Security, 17.3.21.4. Using Xauthority magic cookies
  • Practical UNIX & Internet Security, 18.2.3.1. Do not trust the user's browser!
• COPS (Computer Oracle and Password System)
• • Building Internet Firewalls, B.2.1. COPS
  • Practical UNIX & Internet Security, 19.5.5. NIS+ Limitations
  • Practical UNIX & Internet Security, E.4.3. COPS (Computer Oracle and Password System)COPS
  • TCP/IP Network Administration, 12.4.3.1. COPS
  • auditing package : Building Internet Firewalls, 5.8.5.1. Auditing packages
• copy (cp) command, in NFS : TCP/IP Network Administration, 9.1. The Network File System
• copying
• • bounced messages to postmaster : sendmail, 22.8.3.4. The PostmasterCopy option
  • messages to postmaster : sendmail, 24.4.1. The Postmaster Alias
  • qf file temporarily : sendmail, 23.2.6. The Temporary qf Rewrite Image: tf
• copyleft
• • Practical UNIX & Internet Security, 9.2.1. Comparison Copies
  • Practical UNIX & Internet Security, 26.4.2. copyleft Infringement
  • Practical UNIX & Internet Security, 26.4.2.1. Software piracy and the SPA
  • notices of : Practical UNIX & Internet Security, 26.2.6. Other Tips
• CORBA (Common Object Request Broker Architecture) : Practical UNIX & Internet Security, 19.2. Sun's Remote Procedure Call (RPC)
• core files
• • Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
  • Practical UNIX & Internet Security, C.4. The kill Command
• core gateways
• • TCP/IP Network Administration, 2.4. Internet Routing Architecture
  • TCP/IP Network Administration, 7.5.1. Exterior Gateway Protocol
• cost : (see preference)
• cost-benefit analysis
• • Practical UNIX & Internet Security, 2.3. Cost-Benefit Analysis
  • Practical UNIX & Internet Security, 2.3.4. Convincing Management
• costs of losses : Practical UNIX & Internet Security, 2.3.1. The Cost of Loss
• "could not exec" error : sendmail, 26.3.2. SIGHUP Restart
• count field : TCP/IP Network Administration, 11.3.1. The ping Command
• count-to-infinity problem : TCP/IP Network Administration, 7.4.1.1. Running RIP with routed
• cp command : Practical UNIX & Internet Security, 7.4.1. Simple Local Copies
• cpio program
• • Practical UNIX & Internet Security, 7.3.2. Building an Automatic Backup System
  • Practical UNIX & Internet Security, 7.4.2. Simple Archives
• crack program
• • Practical UNIX & Internet Security, 8.8.3. Cracking Your Own Passwords
  • Practical UNIX & Internet Security, 18.3.3. Setting Up Web Users and Passwords
• cracking
• • backing up because of : Practical UNIX & Internet Security, 7.1.1.1. A taxonomy of computer failures
  • passwords
  • • Practical UNIX & Internet Security, 3.6.1. Bad Passwords: Open Doors
    • Practical UNIX & Internet Security, 3.6.4. Passwords on Multiple Machines
    • Practical UNIX & Internet Security, 8.6.1. The crypt()
    • Practical UNIX & Internet Security, 8.8.3. Cracking Your Own Passwords
    • Practical UNIX & Internet Security, 8.8.3.2. The dilemma of password crackers
    • Practical UNIX & Internet Security, 17.3.3. TELNET (TCP Port 23)
    • logging failed attempts : Practical UNIX & Internet Security, 10.5.3. syslog Messages
  • responding to
  • • Practical UNIX & Internet Security, 24. Discovering a Break-in
    • Practical UNIX & Internet Security, 24.7. Damage Control
  • using rexecd : Practical UNIX & Internet Security, 17.3.17. rexec (TCP Port 512)
• crash : Building Internet Firewalls, 5.10.1. Watch Reboots Carefully
• • logging crashes : Practical UNIX & Internet Security, 10.7.2.1. Exception and activity reports
  • resetting locks after : TCP/IP Network Administration, 9.1.1. NFS Daemons
  • restarting after : TCP/IP Network Administration, 9.2.2. Solaris Line Printer Service
• CRC (cyclic redundancy counter) : (see checksums)
• Cred table (NIS+) : Practical UNIX & Internet Security, 19.5.3. NIS+ Tables
• criminal prosecution
• • Practical UNIX & Internet Security, 26.2. Criminal Prosecution
  • Practical UNIX & Internet Security, 26.2.7. A Final Note on Criminal Actions
• crises : (see disasters and disaster recovery)
• cron file
• • Practical UNIX & Internet Security, 9.2.2.1. Simple listing
  • Practical UNIX & Internet Security, 11.5.1.4. Filename attacks
  • Practical UNIX & Internet Security, 11.5.3.1. crontab entries
  • Practical UNIX & Internet Security, 15.6.2. Automatic Execution of Cleanup Scripts
  • automating backups : Practical UNIX & Internet Security, 7.3.2. Building an Automatic Backup System
  • cleaning up /tmp directory : Practical UNIX & Internet Security, 25.2.4. /tmp Problems
  • collecting login times : Practical UNIX & Internet Security, 10.1.1. lastlog File
  • security checks : TCP/IP Network Administration, 12.4.2. Looking for Trouble
  • statistics and : sendmail, 26.2.3. Using cron for Daily and Weekly Statistics
  • symbolic links in : Practical UNIX & Internet Security, 10.3.7. Other Logs
  • system clock and : Practical UNIX & Internet Security, 17.3.14. Network Time Protocol (NTP) (UDP Port 123)
  • uucp scripts in : Practical UNIX & Internet Security, 15.6.2. Automatic Execution of Cleanup Scripts
• crtscts option : TCP/IP Network Administration, 6.3.1. The PPP Daemon
• Crypt Breaker's Workbench (CBW) : Practical UNIX & Internet Security, 6.6.1.1. The crypt program
• crypt command/algorithm
• • Building Internet Firewalls, 5.8.2.2. How to disable services
  • Practical UNIX & Internet Security, 6.4.1. Summary of Private Key Systems
  • Practical UNIX & Internet Security, 6.6.1. UNIX crypt: The Original UNIX Encryption Command
  • Practical UNIX & Internet Security, 6.6.1.3. Example
  • Practical UNIX & Internet Security, 8.6. The UNIX Encrypted Password System
  • Practical UNIX & Internet Security, 8.6.1. The crypt()
  • Practical UNIX & Internet Security, 8.8.7. Algorithm and Library Changes
  • Practical UNIX & Internet Security, 18.3.3. Setting Up Web Users and Passwords
  • Practical UNIX & Internet Security, 23.5. Tips on Using Passwords
• crypt16 algorithm : Practical UNIX & Internet Security, 8.6.4. Crypt16() and Other Algorithms
• crypto-checksum : TCP/IP Network Administration, 7.4.3. Open Shortest Path First
• cryptography
• • Building Internet Firewalls, 10. Authentication and Inbound
  • Practical UNIX & Internet Security, 6. Cryptography
  • Practical UNIX & Internet Security, 6.7.2. Cryptography and Export Controls
  • Practical UNIX & Internet Security, 14.4.4.2. Protection against eavesdropping
  • checklist for : Practical UNIX & Internet Security, A.1.1.5. Chapter 6: Cryptography
  • checksums
  • • 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
    • • TCP/IP Network Administration, 4.2.1. Obtaining an IP Address
      • TCP/IP Network Administration, 5.3.1.1. Options
    • using Tripwire for : Building Internet Firewalls, 5.8.5.1. Auditing packages
  • digital signatures : (see digital signatures)
  • export laws concerning : Practical UNIX & Internet Security, 6.7.2. Cryptography and Export Controls
  • Message Authentication Codes (MACs) : Practical UNIX & Internet Security, 6.5.5.2. Message authentication codes
  • message digests : (see message digests)
  • PGP : (see PGP)
  • private-key
  • • Practical UNIX & Internet Security, 6.4. Common Cryptographic Algorithms
    • Practical UNIX & Internet Security, 6.4.1. Summary of Private Key Systems
    • TCP/IP Network Administration, 12.6. Encryption
  • public-key
  • • Building Internet Firewalls, 10. Authentication and Inbound
    • Practical UNIX & Internet Security, 6.4. Common Cryptographic Algorithms
    • Practical UNIX & Internet Security, 6.4.2. Summary of Public Key Systems
    • Practical UNIX & Internet Security, 6.4.6. RSA and Public Key Cryptography
    • Practical UNIX & Internet Security, 6.4.6.3. Strength of RSA
    • Practical UNIX & Internet Security, 6.5.3. Digital Signatures
    • Practical UNIX & Internet Security, 18.3. Controlling Access to Files on Your Server
    • Practical UNIX & Internet Security, 18.6. Dependence on Third Parties
    • TCP/IP Network Administration, 12.6. Encryption
    • breaking : Practical UNIX & Internet Security, 19.3.4. Limitations of Secure RPC
    • PGP : Practical UNIX & Internet Security, 6.6.3.2. Creating your PGP public key
    • proving identity with : Practical UNIX & Internet Security, 19.3.1.1. Proving your identity
  • references on : Practical UNIX & Internet Security, D.1.5. Cryptography Books
  • U.S. patents and : Practical UNIX & Internet Security, 6.7.1. Cryptography and the U.S. Patent System
• csh (C shell)
• • Practical UNIX & Internet Security, 5.5.2. Problems with SUID
  • Practical UNIX & Internet Security, 11.5.1. Shell Features
  • Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs
  • Practical UNIX & Internet Security, C.5.3. Running the User's Shell
  • (see also shells)
  • autologout variable : Practical UNIX & Internet Security, 12.3.5.1. Built-in shell autologout
  • history file : Practical UNIX & Internet Security, 10.4.1. Shell History
  • uucp command : Practical UNIX & Internet Security, 15.1.1.1. uucp with the C shell
• cshrc file
• • Practical UNIX & Internet Security, 11.5.2.2. .cshrc, .kshrc
  • Practical UNIX & Internet Security, 12.3.5.1. Built-in shell autologout
  • Practical UNIX & Internet Security, 24.4.1.6. Changes to startup files
• CSI (Computer Security Institute) : Practical UNIX & Internet Security, F.1.3. Computer Security Institute (CSI)
• CSLIP (Compressed SLIP)
• • Practical UNIX & Internet Security, 16.2. IPv4: The Internet Protocol Version 4
  • TCP/IP Network Administration, 5.2. Linux Kernel Configuration
  • TCP/IP Network Administration, 6.4.1. slattach
  • disabling : TCP/IP Network Administration, A.2. The PPP Daemon
• CSRC (Computer Security Resource Clearinghouse) : Building Internet Firewalls, A.5.3. NIST CSRC
• -Ctest.cf argument : TCP/IP Network Administration, 10.8. Testing sendmail.cf
• ctime
• • Practical UNIX & Internet Security, 5.1.2. Inodes
  • Practical UNIX & Internet Security, 5.1.5. File Times
  • Practical UNIX & Internet Security, 5.2.1. chmod: Changing a File's Permissions
  • Practical UNIX & Internet Security, 7.4.7. inode Modification Times
  • Practical UNIX & Internet Security, 9.2.3. Checksums and Signatures
• cu command
• • Practical UNIX & Internet Security, 14.5. Modems and UNIX
  • Practical UNIX & Internet Security, 14.5.3.1. Originate testing
  • Practical UNIX & Internet Security, 14.5.3.3. Privilege testing
  • -l option : Practical UNIX & Internet Security, 14.5.3.1. Originate testing
• cua devices : TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections
• culture, computer security : Practical UNIX & Internet Security, D.1.10. Understanding the Computer Security "Culture"
• curly braces ({})
• • sendmail, 5.3.2. Macros
  • sendmail, 5.3.5. Class Macros
  • sendmail, 7.1. Overview
  • configuration statements
  • • TCP/IP Network Administration, 7.7.1.1. A host configuration
    • TCP/IP Network Administration, B.2. The gated Configuration Language
    • TCP/IP Network Administration, D.3. The dhcpd.conf Configuration File
  • long variable names : TCP/IP Network Administration, 10.5. sendmail Configuration
  • macro names : TCP/IP Network Administration, 10.5.2. The Define Macro Command
• current
• • date : (see $d macro)
  • directory : Practical UNIX & Internet Security, 5.1.3. Current Directory and Paths
  • time and date : (see $b macro)
• custom
• • client software for proxying : Building Internet Firewalls, 7.2.1. Using Custom Client Software for
  • system : Building Internet Firewalls, 13.1.6. Restore and Recover
  • user procedures for proxying : Building Internet Firewalls, 7.2.2. Using Custom User Procedures for
• Customer Warning System (CWS) : Practical UNIX & Internet Security, F.3.4.34. Oracle
• customizing sendmail temporarily : sendmail, 19.6. Alphabetized m4 Macros
• cyclic redundancy counter (CRC) : Building Internet Firewalls, 5.8.5.3. About checksums for auditing
• cyrus and cyrusbb mailers : TCP/IP Network Administration, E.3.5. MAILER

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