Commented Ip Acl Entries; Creating Named Mac Extended Acls - Cisco Catalyst 2975 Software Configuration Manual

Creating Named MAC Extended ACLs

!
Switch(config-ext-nacl)# exit
Switch(config)# interface gigabitethernet1/0/2
Switch(config-if)# ip access-group strict in

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
Switch(config)# interface gigabitethernet1/0/2
Creating Named MAC Extended ACLs
You can filter non-IPv4 traffic on a VLAN or on a Layer 2 interface by using MAC addresses and named
MAC extended ACLs. The procedure is similar to that of configuring other extended named ACLs.
For more information about the supported non-IP protocols in the mac access-list extended command,
see the command reference for this release.
Note Though visible in the command-line help strings, appletalk is not supported as a matching condition for
the deny and permit MAC access-list configuration mode commands.
Beginning in privileged EXEC mode, follow these steps to create a named MAC extended ACL:
Command
Step 1 configure terminal
Step 2 mac access-list extended name
Catalyst 2975 Switch Software Configuration Guide
31-22
Chapter 31
Purpose
Enter global configuration mode.
Define an extended MAC access list using a name.
Configuring Network Security with ACLs
OL-19720-02