how do I know my firewall is working

Startseite
Anhänge:
Nachricht
+ (text/plain)
Nachricht löschen
Nachricht beantworten
Autor: mazdaracer
Datum:  
Betreff: how do I know my firewall is working
Subject says it all! I used the CD from Linux mag. and installed pmfirewall.
I see it starts on boot, but how do I know it's working correctly?

pete