This info is taken from the unofficial Netgear support page.
www.netgear.org The syslog configuration is not available from the web interface and can only be done from the telnet command line interface.
Menu 24.3.2 - System Maintenance - UNIX Syslog
Syslog:
Active= Yes
Syslog IP Address= xxx.xxx.xxx.xxx <---- ip address of the syslog
Log Facility= Local 1 <------ Make sure you set it as the same group in your syslog
Types:
CDR= Yes
Packet triggered= Yes
Filter log= Yes
PPP log= Yes