Examples: Time Range Applied To An Ip Acl; Examples: Commented Ip Acl Entries; Examples: Acl Logging - Cisco Catalyst 2960-XR Security Configuration Manual
Ios release 15.0 2 ex1
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Configuring IPv4 ACLs
Switch(config-if)# ip access-group marketing_group in
Examples: Time Range Applied to an IP ACL
This example denies HTTP traffic on IP on Monday through Friday between the hours of 8:00 a.m. and 6:00
p.m (18:00). The example allows UDP traffic only on Saturday and Sunday from noon to 8:00 p.m. (20:00).
Switch(config)# time-range no-http
Switch(config)# periodic weekdays 8:00 to 18:00
!
Switch(config)# time-range udp-yes
Switch(config)# periodic weekend 12:00 to 20:00
!
Switch(config)# ip access-list extended strict
Switch(config-ext-nacl)# deny tcp any any eq www time-range no-http
Switch(config-ext-nacl)# permit udp any any time-range udp-yes
!
Switch(config-ext-nacl)# exit
Switch(config)# interface gigabitethernet2/0/1
Switch(config-if)# ip access-group strict in
Examples: Commented IP ACL Entries
In this example of a numbered ACL, the workstation 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 workstation through
Switch(config)# access-list 1 permit 171.69.2.88
Switch(config)# access-list 1 remark Do not allow Smith workstation through
Switch(config)# access-list 1 deny 171.69.3.13
In this example of a numbered ACL, the Winter and Smith workstations are not allowed to browse the web:
Switch(config)# access-list 100 remark Do not allow Winter to browse the web
Switch(config)# access-list 100 deny host 171.69.3.85 any eq www
Switch(config)# access-list 100 remark Do not allow Smith to browse the web
Switch(config)# access-list 100 deny host 171.69.3.13 any eq www
In this example of a named ACL, the Jones subnet is not allowed access:
Switch(config)# ip access-list standard prevention
Switch(config-std-nacl)# remark Do not allow Jones subnet through
Switch(config-std-nacl)# deny 171.69.0.0 0.0.255.255
In this example of a named ACL, 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 171.69.0.0 0.0.255.255 any eq telnet
Examples: ACL Logging
Two variations of logging are supported on router ACLs. The log keyword sends an informational logging
message to the console about the packet that matches the entry; the log-input keyword includes the input
interface in the log entry.
OL-29434-01
Catalyst 2960-XR Switch Security Configuration Guide, Cisco IOS Release 15.0(2)EX1
IPv4 ACL Configuration Examples
145
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