Spotting Unused Ports
A quick way to spot serial ports that should be active, but are not, is to issue a grep command for the name of your NETServer (in this example, usrobotics) or for the keywords “NETServer:” and “dialnet” and make a frequency count of which ports get used.
May 4 20:52:20 usrobotics NETServer: port S5 Login succeeded for Usun
May 5 04:05:10 usrobotics dialnet: port S5 Pgpu succeeded dest 149.198.6.1
Here’s a command that will do just that:
grep “port S” / var/log/authlog awk ‘{print $7}’ sort uniq
Syslog System Messages
Syslog System Message Format
In the following examples:
∙usr1 is the hostname of a NETServer, router1 is the host name of an IPX router
∙doug is a user name on the NETServer set up as a login user
∙brian is a user name on the NETServer set up as a dialback login user, Pbeach is a PPP netuser account for a host named beach, using IP address 149.198.7.1
∙Dsand is a dialback netuser
∙Lsand is the Location Table entry referenced by Dsand, mint and cane are the names of hosts
Anywhere a host name appears an IP address can appear instead, if the NETServer’s inverse address lookup fails.
All syslog messages start with the month, day and time stamp as follows; this has been omitted in the examples below, but looks like this:
Jul 24 14:54:56 usr1 dialnet: port S5 doug login failed
