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You can now include comments (remarks) about entries in any IP access list. The remarks make the access list easier for the network administrator to understand. Each remark is limited to 100 characters.
Remarks about entries in an IP access list make the list easier to understand and scan. For example, it is not immediately clear what the purpose of the following entry is:
access-list 1 permit 171.69.2.88
It is much easier to read a remark about the entry to understand its effect, as follows:
access-list 1 remark Permit only Jones workstation through access-list 1 permit 171.69.2.88
For complete information on how to configure IP access lists, refer to the following:
None
The remark can go before or after a permit or deny statement. You should be consistent about where you put the remark so 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.
Remember to apply the access list to an interface or terminal line after the access list is created. Refer to the related documentation for information on how to apply the access list.
To include remarks in an access list, perform one of the following tasks, depending on whether you are using a named or numbered access list:
To write a comment about an entry in a named IP access list, use the following commands in the order shown. Step 1 is performed once; Step 2 can be performed multiple times in the access list, before or after any permit or deny command.
| Step | Command | Purpose | ||
|---|---|---|---|---|
| Router(config)# ip access-list standard name | Identifies the access list by name. | ||
| Router(config-std-nacl)# remark remark | Indicates the purpose of the permit or deny statement. |
To write a comment about an entry in a numbered IP access list, use the following command before or after any access-list permit or access-list deny command:
| Command | Purpose |
|---|---|
Router(config)# access-list access-list-number remark remark | Indicates the purpose of the permit or deny statement. |
In the following example of a numbered access list, the workstation belonging to Jones is allowed access and the workstation belonging to Smith is not allowed access:
access-list 1 remark Permit only Jones workstation through access-list 1 permit 171.69.2.88 access-list 1 remark Do not allow Smith workstation through access-list 1 deny 171.69.3.13
In the following example of a numbered access list, the Winter and Smith workstations are not allowed to browse the web:
access-list 100 remark Do not allow Winter to browse the web access-list 100 deny host 171.69.3.85 any eq http access-list 100 remark Do not allow Smith to browse the web access-list 100 deny host 171.69.3.13 any eq http
In the following example of a named access list, the Jones subnet is not allowed access:
ip access-list standard prevention remark Do not allow Jones subnet through deny 171.69.0.0 0.0.255.255
In the following example of a named access list, the Jones subnet is not allowed to use outbound Telnet:
ip access-list extended telnetting remark Do not allow Jones subnet to telnet out deny tcp host 171.69.2.88 any eq telnet
This section documents new commands. All other commands used with this feature are documented in the Cisco IOS Release 12.0 command references.
To write a helpful comment (remark) for an entry in a numbered IP access list, use the access-list remark global configuration command. To remove the remark, use the no form of this command.
access-list access-list-number remark remark
access-list-number | Number of an IP access list. |
remark | Comment that describes the access list entry, up to 100 characters long. |
The access list entries have no remarks.
Global configuration
This command first appeared in Cisco IOS Release 12.0(2)T.
The remark can be up to 100 characters; anything longer is truncated.
If you want to write a comment about an entry in a named access list, use the remark command.
In the following example, the workstation belonging to Jones is allowed access and the workstation belonging to Smith is not allowed access:
access-list 1 remark Permit only Jones workstation through access-list 1 permit 171.69.2.88 access-list 1 remark Do not allow Smith workstation through access-list 1 deny 171.69.3.13
access-list (extended)
access-list (standard)
remark
To write a helpful comment (remark) for an entry in a named IP access list, use the remark access-list configuration command. To remove the remark, use the no form of this command.
remark remark
remark | Comment that describes the access-list entry, up to 100 characters long. |
The access list entries have no remarks.
Access-list configuration
This command first appeared in Cisco IOS Release 12.0(2)T.
The remark can be up to 100 characters; anything longer is truncated.
If you want to write a comment about an entry in a numbered IP access list, use the access-list remark command.
In the following example, the Jones subnet is not allowed to use outbound Telnet:
ip access-list extended telnetting remark Do not allow Jones subnet to telnet out deny tcp host 171.69.2.88 any eq telnet
access-list remark
deny
ip access-list
permit
Posted: Wed Apr 28 16:33:55 PDT 1999
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