Index

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# Index: P

packages, auditing : 5.8.5.1. Auditing packages
packet filtering
  4.1. Some Firewall Definitions
  4.1.1. Packet Filtering
  6. Packet Filtering
  by address : 6.6. Filtering by Address
  advice for : 6.5. Conventions for Packet Filtering Rules
  bugs in packages : 6.1.2.1. Current filtering tools are not perfect
  characteristics of
    Archie : 8.7.3.1. Packet filtering characteristics of Archie
    DNS
      8.10.1. Packet Filtering Characteristics of DNS
      8.10.5.5. What your packet filtering system needs to allow
    finger : 8.8.1.1. Packet filtering characteristics of finger
    FSP : 8.2.3.1. Packet filtering characteristics of FSP
    FTP : 8.2.1.1. Packet filtering characteristics of FTP
    Gopher : 8.7.1.1. Packet filtering characteristics of Gopher
    HTTP : 8.6.1. Packet Filtering Characteristics of HTTP
    ICMP : 8.12.5.1. Packet filtering characteristics of ICMP
    IRC : 8.9.2.1. Packet filtering characteristics of IRC
    lp : 8.17.3. Packet Filtering and Proxying Characteristics of lp
    lpr : 8.17.1. Packet Filtering Characteristics of lpr
    NFS : 8.14.1. Packet Filtering Characteristics of NFS
    NIS : 8.15.1. Packet Filtering Characteristics of NIS/YP
    NNTP
      8.5.1. Packet Filtering Characteristics of NNTP
      8.5.4. Good Ways to Set up NNTP in a Firewall Environment
    NTP : 8.13.1. Packet Filtering Characteristics of NTP
    ping : 8.12.3.1. Packet filtering characteristics of ping
    POP : 8.1.2.1. Packet filtering characteristics of POP
    "r" commands : 8.4.1.1. Packet filtering characteristics of the BSD `r' commands
    rex : 8.4.3.1. Packet filtering characteristics of rex
    rexec : 8.4.2.1. Packet filtering characteristics of rexec
    RIP : 8.12.2.1. Packet filtering characteristics of RIP
    SMTP : 8.1.1.4. Packet filtering characteristics of SMTP
    SNMP : 8.12.1.1. Packet filtering characteristics of SNMP
    syslog : 8.11.1. Packet Filtering Characteristics of syslog
    talk : 8.9.1.1. Packet filtering characteristics of talk
    Telnet : 8.3.1. Packet Filtering Characteristics of Telnet
    TFTP : 8.2.2.1. Packet filtering characteristics of TFTP
    traceroute : 8.12.4.1. Packet filtering characteristics of traceroute
    UUCP : 8.2.4.1. Packet filtering characteristics of UUCP
    WAIS : 8.7.2.1. Packet filtering characteristics of WAIS
    whois : 8.8.2.1. Packet filtering characteristics of whois
    X11 : 8.16.1. Packet Filtering Characteristics of X11
  choosing a router : 6.8. Choosing a Packet Filtering Router
  configuring router : 6.2. Configuring a Packet Filtering Router
  conventions for : 6.8.3. It Should Allow Simple Specification of Rules
  dynamic : 6.3.3.2. UDP
  example of : 6.10. Putting It All Together
  with exterior router : 4.2.3.4. Exterior router
  inbound versus outbound : 6.8.6. It Should Apply Rules Separately to Incoming and Outgoing Packets, on a Per-Interface Basis
  with interior router : 4.2.3.3. Interior router
  IP : (see IP)
  performance level of : 6.8.1. It Should Have Good Enough Packet Filtering Performance for Your Needs
  perimeter, and encryption : 10.5.3. Where Do You Encrypt?
  rule sequence of : 6.8.5. It Should Apply Rules in the Order Specified
  rules for : 6.5. Conventions for Packet Filtering Rules
  rules in screened host architecture : 9.2.2. Packet Filtering Rules
  rules in screened subnet architecture : 9.1.2. Packet Filtering Rules
  with screened host architecture : 4.2.2. Screened Host Architecture
  by service : 6.7. Filtering by Service
  by source port : 6.7.4. Risks of Filtering by Source Port
  testing : 6.8.7. It Should Be Able to Log Accepted and Dropped Packets
  tools for : B.3. Packet Filtering Tools
  transparency of : 6.1.1.2. Packet filtering doesn't require user knowledge or cooperation
  where to do : 6.8.8. It Should Have Good Testing and Validation Capabilities
packets
  4.1. Some Firewall Definitions
  6. Packet Filtering
  8.12.4. traceroute
  (see also traceroute program)
  encrypting : (see encryption)
  forged : 6.3.7. Non-IP Protocols
  fragmenting : 6.3.2.2. IP fragmentation
  fragments : 6.3.1.2. IP layer
  handling (by router) : 6.4. What Does the Router Do with Packets?
  headers of : 6.3. What Does a Packet Look Like?
  ICMP : 8.12.5. Other ICMP Packets
  inbound versus outbound : 6.2.2. Be Careful of `Inbound' Versus `Outbound' Semantics
  rates of : 6.8.1. It Should Have Good Enough Packet Filtering Performance for Your Needs
  sniffing, programs for : 10.1.2. Packet Sniffing
  source-routed : 5.8.2.5. Turning off routing
  structure : 6.3. What Does a Packet Look Like?
  TCP : 6.3.3.1. TCP
  UDP : 6.3.3.2. UDP
PAR (Positive Acknowledgment with Retransmission) : C.6.2. Transmission Control Protocol
passive (or PASV) mode, FTP : 8.2.1.1. Packet filtering characteristics of FTP
passwords
  10.2. What Is Authentication?
  10.2.2. Something You Know
  (see also authentication)
  aging : 12.1.2. Managing Your Accounts
  false authentication and : 10.1.3. False Authentication
  one-time : 10.3.1. One-Time Passwords
  stealing with network taps : 1.2.1.3. Information Theft
  time-based : 10.3.2. Time-based Passwords
patches : 12.3.2. Keeping Your Systems Up To Date
pcbind service : 5.8.2.4. Which services should you disable?
performance
  with multiple interior routers : 4.3.5. It's Dangerous to Use Multiple Interior Routers
  of packet filter : 6.8.1. It Should Have Good Enough Packet Filtering Performance for Your Needs
perimeter nets
  multiple : 4.3.7. It's OK to Have Multiple Perimeter Networks
  shared : 4.4.5. A Shared Perimeter Network Allows an `Arms-length' Relationship
perimeter network
  4.1. Some Firewall Definitions
  4.2.3.1. Perimeter network
ping program : 2.10. Network Management Services
  configuring : 8.12.3. ping
ping service : 5.6. Selecting Services Provided by the Bastion Host
platforms : Platforms
plug-gw proxy : 7.7.3. Generic Proxying with TIS FWTK
policy, security : (see security, policies of)
POP (Post Office Protocol) : 8.1.2. Post Office Protocol (POP)
  multiple services : 8.1.2.2. Proxying characteristics of POP
port numbers : C.12.2. Port Numbers
portmap service
  5.8.2.4. Which services should you disable?
  B.5.3. portmap
portmapper server : 6.3.3.4. RPC
ports, source, filtering by : 6.7.4. Risks of Filtering by Source Port
ports, well-known : C.12.3. Sockets
positive acknowledgment : C.6.2. Transmission Control Protocol
prearranging file transfer : 8.2.1.6. Be careful of writable directories in the anonymous FTP area
printing : 3.1. Least Privilege
  configuring protocols : 8.17. Printing Protocols (lpr and lp)
  systems : 2.14. Printing Systems
private
  IP addresses : 4.5. What the Future Holds
  key cryptography : 10. Authentication and Inbound Services
  newsgroups : 2.4. Usenet News
probes, responding to : 12.2.4. Responding to Probes
procedures for proxying, custom : 7.2.2. Using Custom User Procedures for Proxying
processing speed : 5.3.2. How Fast a Machine?
programs, removing nonessential : 5.8.4.2. Remove nonessential programs
promiscuous mode : 5.5. Locating the Bastion Host on the Network
protocols
  analyzing : 8.18. Analyzing Other Protocols
  bidirectionality of : 6.2.1. Protocols Are Usually Bidirectional
  data : (see TCP/IP)
  dedicated Archie : 8.7.3.3. Providing Archie service to your users
  above IP : 6.3.3. Protocols Above IP
  non-IP : 6.3.7. Non-IP Protocols
  numbers for : C.12.1. Protocol Numbers
  packet filtering and : 6.1.2.2. Some protocols are not well suited to packet filtering
  routing : (see RIP)
  security of, and proxying : 7.4.3. Protocol Security
  time-dependence of : 8.13. Network Time Protocol (NTP)
  weaknesses of, and proxy services : 7.1.2.5. Proxy services don't protect you from all protocol weaknesses
proxy services
  4.1. Some Firewall Definitions
  4.1.2. Proxy Services
  7. Proxy Systems
  application- versus circuit-level : 7.3.1. Application-Level Versus Circuit-Level Proxies
  characteristics of
    Archie : 8.7.3.2. Proxying characteristics of Archie
    Berkeley "r" commands : 8.4.1.2. Proxying characteristics of the BSD `r' commands
    DNS : 8.10.2. Proxying Characteristics of DNS
    finger : 8.8.1.2. Proxying characteristics of finger
    FSP : 8.2.3.2. Proxying characteristics of FSP
    FTP : 8.2.1.2. Proxying characteristics of FTP
    Gopher : 8.7.1.2. Proxying characteristics of Gopher
    HTTP : 8.6.2. Proxying Characteristics of HTTP
    IRC : 8.9.2.2. Proxying characteristics of IRC
    lp : 8.17.3. Packet Filtering and Proxying Characteristics of lp
    lpr : 8.17.2. Proxying Characteristics of lpr
    NFS : 8.14.2. Proxying Characteristics of NFS
    NIS : 8.15.2. Proxying Characteristics of NIS/YP
    NNTP
      8.5.2. Proxying Characteristics of NNTP
      8.5.4. Good Ways to Set up NNTP in a Firewall Environment
    NTP : 8.13.2. Proxying Characteristics of NTP
    ping : 8.12.3.2. Proxying characteristics of ping
    POP : 8.1.2.2. Proxying characteristics of POP
    rex : 8.4.3.2. Proxying characteristics of rex
    rexec : 8.4.2.2. Proxying characteristics of rexec
    RIP : 8.12.2.2. Proxying characteristics of RIP
    SMTP : 8.1.1.5. Proxying characteristics of SMTP
    SNMP : 8.12.1.2. Proxying characteristics of SNMP
    syslog : 8.11.2. Proxying Characteristics of syslog
    talk : 8.9.1.2. Proxying characteristics of talk
    Telnet : 8.3.2. Proxying Characteristics of Telnet
    TFTP : 8.2.2.2. Proxying characteristics of TFTP
    traceroute : 8.12.4.2. Proxying characteristics of traceroute
    UUCP : 8.2.4.2. Proxying characteristics of UUCP
    WAIS : 8.7.2.2. Proxying characteristics of WAIS
    whois : 8.8.2.2. Proxying characteristics of whois
  generic versus dedicated : 7.3.2. Generic Versus Dedicated Proxies
  intelligent servers : 7.3.3. Intelligent Proxy Servers
  internal versus external clients : 7.4.5. Internal Versus External Clients
  Internet services and : 7.4. Using Proxying with Internet Services
  multiple operating systems and : 7.1. Why Proxying?
  protocol security : 7.4.3. Protocol Security
  SOCKS package for : 7.6. Using SOCKS for Proxying
  software for : 7.2. How Proxying Works
  TIS Internet Firewalls Toolkit for : 7.7. Using the TIS Internet Firewall Toolkit for Proxying
  tools for : B.4. Proxy Systems Tools
  versus packet filtering : 6.1.1.2. Packet filtering doesn't require user knowledge or cooperation
  when unable to provide : 7.8. What If You Can't Proxy?
  without proxy server : 7.5. Proxying Without a Proxy Server
public key cryptography : 10. Authentication and Inbound Services
pursuing intruders : 13.3. Pursuing and Capturing the Intruder

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