ipfw/natd broken?

[Troy Settle]

All,

I have a box (486, 16mb) running FreeBSD 3.51-something.  It's been in 
service for the better part of 10 years (originally 2.0.5 or so).  It's 
acting as a router/nat device for a network with about 50 desktop 
systems, and has never given me a problem until this week.

It seems that VPN (PPTP) won't work behind NAT.  I can use VPN tunnels 
from XP PRO to both windows servers and linux-based VPN servers all day 
long from home using my netgear broadband router, but from this 
location, behind the FreeBSD box, they won't work.

What gives?


-- 
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   Troy Settle
   Pulaski Networks
   866.477.5638
   http://www.psknet.com