Access Control List Commands 4

This shows how to create a standard ACL with an ingress mask to deny access to the IP host 171.69.198.102, and permit access to any others.

Console(config)#access-list ip standard A2 Console(config-std-acl)#permit any Console(config-std-acl)#deny host 171.69.198.102 Console(config-std-acl)#end

Console#show access-list

IP standard access-list A2: deny host 171.69.198.102 permit any

Console#configure Console(config)#access-list ip mask-precedence in Console(config-ip-mask-acl)#mask host any Console(config-ip-mask-acl)#exit Console(config)#interface ethernet 1/1 Console(config-if)#ip access-group A2 in Console(config-if)#end

Console#show access-list

IP standard access-list A2: deny host 171.69.198.102 permit any

Console#

This shows how to create an extended ACL with an egress mask to drop packets leaving network 171.69.198.0 when the Layer 4 source port is 23.

Console(config)#access-list ip extended A3 Console(config-ext-acl)#deny host 171.69.198.5 any Console(config-ext-acl)#deny 171.69.198.0 255.255.255.0 any source-port 23 Console(config-ext-acl)#end

Console#show access-list

IP extended access-list A3: deny host 171.69.198.5 any

deny 171.69.198.0 255.255.255.0 any source-port 23 Console#config

Console(config)#access-list ip mask-precedence out Console(config-ip-mask-acl)#mask 255.255.255.0 any source-port Console(config-ip-mask-acl)#exit Console(config)#interface ethernet 1/15 Console(config-if)#ip access-group A3 out Console(config-if)#end

Console#show access-list

IP extended access-list A3:

deny 171.69.198.0 255.255.255.0 any source-port 23 deny host 171.69.198.5 any

IP egress mask ACL:

mask 255.255.255.0 any source-port Console#

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