Logging iptables messages with rsyslog

Rsyslog is the enhanced syslogd for Linux and Unix, extending the good syslog-ng.

If you use netfilter's iptables, you may know that a target could be LOG (with a prefix that can be configured) sending detailed information in the kernel log (since netfilter runs in the kernel). Rsyslog and syslog-ng regularily read the kernel log and save it to kern.log (among others).