Now something very important to know. It’s all about the order in which a router does its operations.

  • If IPsec, then check input access list
  • Decryption, for CET or IPsec
  • Access-list
  • Input Rate Limits
  • Input Accounting
  • Policy Routing
  • Routing
  • Redirect to Web Cache
  • NAT
  • Crypto (check map)
  • Output access list
  • CBAC
  • TCP Intercept
  • Encryption
  • Queueing