Cisco Cisco IOS Software Release 12.4(9)T Fascicule

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ACL Syslog Correlation 
Simplifies ACL Monitoring
ƒ
Provides a consistent monitoring solution for IOS Access Control Lists 
(ACL), allowing network management tools to easily correlate Access 
Control Entry (ACE) rules with their corresponding syslog events
ƒ
Reduces complexity of managing and monitoring ACL rules
ƒ
Helps network administrators troubleshoot issues with ACE rules and 
allows them to monitor ACE rules effectiveness
ip access-list extended access-control
permit ip any host 10.10.10.100 log 
red-server
permit ip any host 10.10.10.200 log 
blue-server
permit ip any any
Sep  3 16:31:18.958: %SEC-6-IPACCESSLOGDP: list access-control permitted icmp 
192.168.1.100 -> 10.10.10.100 (0/0), 11 packets  [ 
red-server 
]
Sep  3 16:32:18.953: %SEC-6-IPACCESSLOGDP: list access-control permitted icmp 
192.168.1.100 -> 10.10.10.200 (0/0), 3 packets  [ 
blue-server 
]
Tags are Appended to Generated Syslog Events
Define TAG to Configured ACE Rules
Cisco IOS 
Security