IOS: Access List (ACLs)

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Configuring IP Access Lists: https://www.cisco.com/c/en/us/support/docs/security/ios-firewall/23602-confaccesslists.html#acltypes

Types of ACLs:

  • Standard ACLs
  • Extended ACLs
  • Lock and Key (Dynamic ACLs)
  • IP Named ACLs, Reflexive ACLs, Time-Based ACLs Using Time Ranges, Commented IP ACL Entries, Context-Based Access Control, Authentication Proxy, Turbo ACLs, Distributed Time-Based ACLs, Receive ACLs, Infrastructure Protection ACLs, Transit ACLs.



  • router(config)#ip access-list extended test
  • router(config-ext-nacl)#permit ip host 2.2.2.2 host 3.3.3.3
  • router(config-ext-nacl)#permit tcp host 1.1.1.1 host 5.5.5.5 eq www
  • router(config-ext-nacl)#permit icmp any any
  • router(config-ext-nacl)#permit udp host 6.6.6.6 10.10.10.0 0.0.0.255 eq domain


  • ip access-group


See also

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