Disabling useless Logs on an ASA

While reviewing the ASA logs in relation to a large wireless metering project in WA, i came across a number of log entries that were just there (hundreds of thousands of them), so here’s how to disable them:

%ASA-6-302013: Built inbound TCP connection……
%ASA-6-302013: Built inbound TCP connection…..
%ASA-6-302015: Built outbound UDP connection…..
%ASA-6-302014: Teardown TCP connection…….
%ASA-6-302013: Built inbound TCP connection ………
%ASA-6-302020: Built outbound ICMP connection………
%ASA-6-302013: Built inbound TCP connection……

To exclude these types of log messages from being recorded. Simply login to the CLI and type the following:

ASA#config t
ASA(config)#no logging message 302016

Each log message has a syslog-id which is the 6 digit number. If there are additional types of logs you want to block, simply repeat the command above for each syslog-id. Link to the massive list of syslog-id messages and their descriptions:

And the command reference:

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