Cisco Systems 3130 User Manual

This example uses named ACLs to permit and deny the same traffic.

Switch(config)# ip access-list extended deny_access

Switch(config-ext-nacl)# deny tcp any any time-range new_year_day_2006

Switch(config-ext-nacl)# exit

Switch(config)# ip access-list extended may_access

Switch(config-ext-nacl)# permit tcp any any time-range workhours

Switch(config-ext-nacl)# end

Switch# show ip access-lists

Extended IP access list lpip_default

    10 permit ip any any

Extended IP access list deny_access

    10 deny tcp any any time-range new_year_day_2006 (inactive)

Extended IP access list may_access

    10 permit tcp any any time-range workhours (inactive) 

You can use the remark keyword to include comments (remarks) about entries in any IP standard or 
extended ACL. The remarks make the ACL easier for you to understand and scan. Each remark line is 
limited to 100 characters. 

The remark can go before or after a permit or deny statement. You should be consistent about where you 
put the remark so that it is clear which remark describes which permit or deny statement. For example, 
it would be confusing to have some remarks before the associated permit or deny statements and some 
remarks after the associated statements. 

To include a comment for IP numbered standard or extended ACLs, use the access-list access-list 
number remark remark global configuration command. To remove the remark, use the no form of this 
command. 

In this example, the server that belongs to Jones is allowed access, and the workstation that belongs to 
Smith is not allowed access:

Switch(config)# access-list 1 remark Permit only Jones server through

Switch(config)# access-list 1 permit 171.69.2.88

Switch(config)# access-list 1 remark Do not allow Smith server through

Switch(config)# access-list 1 deny 171.69.3.13

For an entry in a named IP ACL, use the remark access-list configuration command. To remove the 
remark, use the no form of this command. 

In this example, the Jones subnet is not allowed to use outbound Telnet:

Switch(config)# ip access-list extended telnetting

Switch(config-ext-nacl)# remark Do not allow Jones subnet to telnet out

Switch(config-ext-nacl)# deny tcp host 171.69.2.88 any eq telnet

You can use numbered ACLs to control access to one or more terminal lines. You cannot apply named 
ACLs to lines. You must set identical restrictions on all the virtual terminal lines because a user can 
attempt to connect to any of them.

For procedures for applying ACLs to interfaces, see the 

. For applying ACLs to VLANs, see the