To enable your linksys router with DD-WRT firmware to log to syslog (in my case running on a Centos 4 box), first enable it in the router firmware and set the host address. Then
Method 1 - Vanillla Syslogd
Put this in /etc/syslogd.conf (NOTE: this may log more than you bargained for…)
# linksys
user.* /var/log/router.log
kernel.* /var/log/router.log
And add -r (enable remote logging - only do this if you know what you’re doing) to the SYSLOGD_OPTIONS in /etc/sysconfig/syslog
Then restart syslogd.
Then add /var/log/router.log to the list of logfiles in /etc/logrotate.d/syslog
Method 2 - Syslog-NG
Syslog-NG is an improved version of syslog, unfortunately it is not GPL. Anyway if you install it, stop & disable standard syslog, then add this to the (Redhat) conf it should work.
source gateway {
udp(ip(0.0.0.0) port(514));
};
source tcpgateway {
tcp(ip(0.0.0.0) port(514) max_connections(1000));
};
destination hosts {
file("/var/log/syslogs/$HOST/$FACILITY.log"
owner(root) group(root) perm(0600) dir_perm(0700)
create_dirs(yes));
};
log {
source(gateway);
destination(hosts);
};
log {
source(tcpgateway);
destination(hosts);
};
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