Filter
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C. Router CLI Commands, Codes, and Designations
9700-A2-GB20-20 December 2002 C-19
Filter (access-list) Commands
Filter commands are used to create or delete Access Lists.
Table C-11. Filter Commands (1 of 4)
access-list
access-list-num
[{permit | deny}
{{
source-ip
[
source-wildcard
] | any | host
source-host-ip
} |
{
protocol
{
source-ip
source-wildcard
| any | host
source-host-ip
}
[
src-operator
src-port
[
src-end-port
] ]
{
dest-ip
dest-wildcard
| any | host
dest-host-ip
}
[ [
icmp-msg-type
[
icmp-msg-code
] ] |
[
dest-operator
dest-port
[
dest-end-port
] ] ] }|
{
type-code
[range
end-type-code
] } }
no access-list
access-list-num
[{permit | deny}
{{
source-ip
[
source-wildcard
] | any | host
source-host-ip
} |
{
protocol
{
source-ip
source-wildcard
| any | host
source-host-ip
}
[
src-operator
src-port
[
src-end-port
] ]
{
dest-ip
dest-wildcard
| any | host
dest-host-ip
}
[ [
icmp-msg-type
[
icmp-msg-code
] ] |
[
dest-operator
dest-port
[
dest-end-port
] ] ] } |
{
type-code
[ range
end-type-code
] } }
Minimum Access Level: Administrator
Command Mode: config
Allows a user to create or delete a rule for an access list. Access lists default to an implicit
deny statement for everything. Access lists are terminated by an implicit deny.
access-list-num
– The access list number. Valid ranges for access lists are:
1–99 – Standard IP access lists.
100–199 – Extended IP access lists.
200–299 – Protocol type-code access lists.
permit – Specifies to permit access and forward packets matching the criteria.
deny – Specifies to deny access and discard packets matching the criteria.
For Standard IP Access Lists:
Example: access-list 1 permit 10.1.1.1
source-ip
– The source IP Address to match.
source-wildcard – Specifies a 32-bit wildcard mask indicating the bit positions in the
source IP address to ignore during matches. This argument must be supplied when a
source-ip address is specified.
any – Specifies to match any source host. A source-ip of 0.0.0.0 and a source-wildcard
of
255.255.255.255 are specified.
host – Specify a single host source address to match.
source
-
host-ip
– The source host IP address to match.
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