Creating Named Standard And Extended Acls - Cisco WS-C3560-48PS-S Software Configuration Manual

Configuring IP ACLs
After creating a numbered extended ACL, you can apply it to terminal lines (see the
ACL to a Terminal Line" section on page
Interface" section on page
page

Creating Named Standard and Extended ACLs

You can identify IP ACLs with an alphanumeric string (a name) rather than a number. You can use named
ACLs to configure more IP access lists in a router than if you were to use numbered access lists. If you
identify your access list with a name rather than a number, the mode and command syntax are slightly
different. However, not all commands that use IP access lists accept a named access list.
The name you give to a standard or extended ACL can also be a number in the supported range of access
Note
list numbers. That is, the name of a standard IP ACL can be 1 to 99; the name of an extended IP ACL
can be 100 to 199. The advantage of using named ACLs instead of numbered lists is that you can delete
individual entries from a named list.
Consider these guidelines and limitations before configuring named ACLs:
•
•
•
•
Beginning in privileged EXEC mode, follow these steps to create a standard ACL using names:
Command
Step 1
configure terminal
Step 2 ip access-list standard name
Step 3
deny {source [source-wildcard] | host source |
any} [log]
or
permit {source [source-wildcard] | host source
| any} [log]
Step 4 end
Step 5
show access-lists [number | name]
Step 6 copy running-config startup-config
To remove a named standard ACL, use the no ip access-list standard name global configuration
command.
Catalyst 3560 Switch Software Configuration Guide
27-14
27-19), or to VLANs (see the
27-29).
Not all commands that accept a numbered ACL accept a named ACL. ACLs for packet filters and
route filters on interfaces can use a name. VLAN maps also accept a name.
A standard ACL and an extended ACL cannot have the same name.
Numbered ACLs are also available, as described in the
section on page 27-7.
You can use standard and extended ACLs (named or numbered) in VLAN maps.
Chapter 27
27-18), to interfaces (see the
"Configuring VLAN Maps" section on
"Creating Standard and Extended IP ACLs"
Purpose
Enter global configuration mode.
Define a standard IP access list using a name, and enter access-list
configuration mode.
The name can be a number from 1 to 99.
Note
In access-list configuration mode, specify one or more conditions
denied or permitted to determine if the packet is forwarded or
dropped.
host source—A source and source wildcard of source 0.0.0.0.
•
any—A source and source wildcard of 0.0.0.0
•
255.255.255.255.
Return to privileged EXEC mode.
Show the access list configuration.
(Optional) Save your entries in the configuration file.
Configuring Network Security with ACLs
"Applying an IP
"Applying an IP ACL to an
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