How To Configure Cisco ASA for Sending Syslog Messages
This video focuses on how to configure Logging/Syslog on the Cisco ASA firewalls. Having relevant logs sent out to the appropriate location is one of the crucial parts of the firewall operation. ASA can send logs to various locations such as local buffer, ASDM, terminal-sessions and external syslog servers.
Syslog messages are structured as follows:
%ASA Severity_Level Syslog_ID: Log_Message
- Begin with a percentage sign (%)
- Keyword 'ASA'
- Severity level 1-7
- A unique six-digit syslog-id
- Log message
On Cisco ASA logging is disabled by default so, the first thing you need to do is enable it by running logging enablecommand.
Enabling logging doesn't mean you can view the logs on the CLI or ASDM because ASA only generates messages but does not save them to a location from which you can view them, for that you need to specify which locations the ASA should send the logs to.
To view the historic logs and to keep the logs for audit purposes, you can send them to an external syslog server. By default, ASA sends syslog on UDP/514 port, but you can change it if you wish. I'm using Kiwi syslog Server for this example which can be downloaded from their website:
www.solarwinds.com/free-tools...
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