>has anyone ported the IPLogger package by Mike Edulla to NetBSD?
>It listens for all TCP connects on all ports and even logs ICMP packets. 

I've nveer heard of IPlogger. If it's based on bpf or libpcap, it
should Just Work.  (Unless it's a nonportable Linux package, that is.)

>Or is there something similar already available for NetBSD?

We have Darren Reed's IPfil, which can log packets as well as
firewalling... does that come close to what you want?