How to keep track of logs of a Cisco router using OSX? Easy task!

Enable syslog listener on OSX: instructions here

add this line to /etc/syslog.conf

local7.* /var/log/cisco.log

enable logging on the router:

logging facility local7
! ip address of iMac
logging 10.0.0.1

install the Syslog Widget  and configure it to check file

/var/log/cisco.log.

Use GeekTool  if you prefer to view logs on the desktop.