Syslog - New Generation

http://freshmeat.net/projects/syslog-ng/

"syslog-ng, as the name shows, is a syslogd replacement, but with new functionality for the new generation. The original syslogd allows messages only to be sorted based on priority/facility pairs; syslog-ng adds the possibility to filter based on message contents using regular expressions"


See also Linux, LinuxSecurity, Snort