Network port Tools for NW

I'm looking for port testing tools that I can run on our server to test it's connectivity to other nodes, such as our master backup server, to see if our Firewall is a problem.
Obviously, I'm looking for NLMs that run on the server itself, not on Windows, which most of the stuff in Cool Solutions seems to be.

More to the point, I'm looking for an equivalent to nmap or hping for NetWare 6.5, but so far, I can't find anything.
I just today discovered that the telnet.nlm is useless for testing ports, as it simply ignores the space and port entered after the IP, and just uses port 23.

Thanks!