Evaluation of Network Address Translation

• Advantages
  • Enforce control over outbound connections (internal addresses can not be used)
  • Restrict incoming traffic
  • Conceal internal network configuration
  • Conserve address space
• Disadvantages
  • Mapping interferes with stateless IP model
  • Confused by embedded IP addresses
  • Interferes with authentication and encryption
  • Confuses logging

• PreviousNAT Example
• Contents
• NextFirewall Architectures

 Last change: Monday, June 21, 2004 3:47 pm
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