Switch User Manual

Configuring Access Lists
26-82 Authentication and Authorization Configuration
Configuring Access Lists
Purpose
Toreviewandconfiguresecurityaccesscontrollists(ACLs),whichpermitordenyaccessto
routinginterfacesbasedonprotocolandIPaddressrestrictions.
Commands
show access-lists
UsethiscommandtodisplayconfiguredIPaccesslistswhenoperatinginroutermode.
Syntax
showaccess‐lists[number]
Parameters
Defaults
Ifnumberisnotspecified,theentiretableofaccesslistswillbedisplayed.
Mode
Anyroutermode.
Example
ThisexampleshowshowtodisplayIPaccesslistnumber145.Thisisanextendedaccesslist,
whichpermitsordeniesICMP,UDPandIPframesbasedonrestrictionsconfiguredwithoneof
theaccess‐listcommands.Fordetailsonconfiguringstandardaccesslists,referto“access‐list
(standard)”onpage 26
‐83.Fordetailsonconfiguringextendedaccesslists,referto“access‐list
(extended)”onpage 26‐84
.
Router: These commands can be executed when the device is in router mode only. For details
on how to enable router configuration modes, refer to “Enabling Router Configuration Modes” on
page 18-2.
Note: Refer to the Release Notes for your product for any limitations that may apply to access
control lists.
For information about... Refer to page...
show access-lists 26-82
access-list (standard) 26-83
access-list (extended) 26-84
ip access-group 26-86
access‐list‐
number
(Optional)Displaysaccesslistinformationforaspecificaccesslistnum ber.
Validvaluesarebetween1and199.