Cisco 7604 Configuration Guide - Page 251
Applying the Time Range to an ACE, Logging Access List Activity, Access List Logging Overview
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Chapter 13 Identifying Traffic with Access Lists Logging Access List Activity The following is an example of a weekly periodic time range from 8:00 a.m. to 6:00 p.m on weekdays.: hostname(config)# time-range workinghours hostname(config-time-range)# periodic weekdays 8:00 to 18:00 Applying the Time Range to an ACE To apply the time range to an ACE, enter the following command: hostname(config)# access-list access_list_name [extended] {deny | permit}...[time-range name] See the "Adding an Extended Access List" section on page 13-6 for complete access-list command syntax. Note If you also enable logging for the ACE, use the log keyword before the time-range keyword. If you disable the ACE using the inactive keyword, use the inactive keyword as the last keyword. The following example binds an access list named "Sales" to a time range named "New_York_Minute." hostname(config)# access-list Sales line 1 extended deny tcp host 209.165.200.225 host 209.165.201.1 time-range New_York_Minute Logging Access List Activity This section describes how to configure access list logging for extended access lists and Webtype access lists. This section includes the following topics: • Access List Logging Overview, page 13-25 • Configuring Logging for an ACE, page 13-26 • Managing Deny Flows, page 13-27 Access List Logging Overview By default, when traffic is denied by an extended ACE, the FWSM generates system log message 106023 for each denied packet, in the following form: %XXX-106023: Deny protocol src [interface_name:source_address/source_port] dst interface_name:dest_address/dest_port [type {string}, code {code}] by access_group acl_id If the FWSM is attacked, the number of system log messages for denied packets can be very large. We recommend that you instead enable logging using system log message 106100, which provides statistics for each ACE and lets you limit the number of system log messages produced. Alternatively, you can disable all logging. OL-20748-01 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM 13-25
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