how to setup a syslog (rsyslog) server on an ubuntu machine to log d-link DIR-655 router logs

SETTING UP SYSLOG FOR ROUTER LOGS ON AN EXTERNAL SERVER

enable sending router syslogs to myserver (Tools > Syslog):
http://192.168.0.1/Tools/SysLog.shtml

put a checkmark next to Enable Logging To Syslog Server

Syslog Server IP Address is currently myserver: 192.168.0.19

// on the syslog server

install rsyslog:
sudo apt-get install rsyslog

edit the main rsyslog config file:
sudo nano -w /etc/rsyslog.conf
make sure the following lines are uncommented:
$ModLoad imudp
$UDPServerRun 514

$ModLoad imtcp
$InputTCPServerRun 514

in order to get dynamic log file naming to work, make sure these lines are commented out:
#$PrivDropToUser syslog
#$PrivDropToGroup syslog

before i figured out that last tip, dynamic file names using template was not working. if those 2 lines aren't commented out, then there becomes a permissions issue, and use of template won't work (see below)

edit the default rsyslog config file:
sudo nano -w /etc/rsyslog.d/50-default.conf

add the following lines at the very top:
$template DynFile,"/var/log/myrouter/%$year%%$month%%$day%.log"
:fromhost-ip, isequal, "192.168.0.1" ?DynFile
:fromhost-ip, isequal, "192.168.0.1" ~

192.168.0.1 is the router ip address

the bottom line means log nothing (~) after this line for any messages from host ip 192.168.0.1 (i.e. the logging rules specified after this line only apply to messages from the localhost)

then restart the rsyslog service:
sudo service rsyslog restart

you will shortly begin to see router log files appearing here:
/var/log/myrouter/

with filenames in the following format:
yyyymmdd.log

e.g.:
/var/log/myrouter/20120920.log