test firewall (pf) configuration (openbsd 3.1)

[achim_(_at_)_gmg_(_dot_)_ruhr-uni-bochum_(_dot_)_de]

Hi !

I want to build a fireall based on openbsd 3.1 and pf.

Is  there a way (a tool) to check/test the firewall/pf-configuration with 
openbsd 3.1 direktly on the firewall without involving other computer?

A little bit elaborate way is to set up a second machine on the outside 
from the firewall and generate tcp-packets and send these special
packets to the internal net or to the firewall and the per tcpdump what 
happens with this packet.

Is there a better way to test ist and when not, which programm can i 
use to generate those packets?

Thanks for help and answers

With best regards
achim






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