If you need to keep an eye and history about what is going on on your router enable remote login with this command:
echo “option ‘log_ip’ ‘192.168.1.2’”>> /etc/config/system
Change 192.168.1.2 to your server. Then on your server (linux debian as example) check
/etc/default/rsyslog and add “-r” to the default options. you would start getting messages on your system.
Maybe you need to comment it out on this file /etc/rsyslog.conf those options:
# $ModLoad imudp
# $UDPServerRun 514