I posted this problem before, and got a couple of replies.. but still no 
joy.. i have had a few more thoughts:

setup:
OptusCable ->
RT314 router -(192.168.0.n/24)->
m0n0wall -(172.16.0.n/16)->
CNSH1600 switch ->
XP Pc

problem:
Trying to open TCP port 3784 for Ventrilo (voice) service running on 
internal XP Pc.
(will attempt to run ventrilo daemon on m0n0 box when plugin beta for cd-rom 
m0n0 available)

questions:
- router - port forwarding - ?Do i forward the required port to the WAN 
interface IP? (what I have set), or to the LAN IP? (what I have NOT 
currently set, but did try before).

- m0n0 - NAT - Rather than describe the combination of things I have tried 
:) can anyone tell me which I should be using? (Inbound / server NAT/ 1:1 / 
outbound) - keep in mind the service is running on an internal PC and I want 
to allow incoming connections.
Currently I have an "Inbound" rule like so:
WAN  TCP  3784  172.16.0.236  3784

- m0n0 - Firewall Rules - WAN interface - I have set this rule:
   pass TCP * * (IP of the PC running sevice) 3784
  This would be correct to allow the connection IN right?
  I also suspect I need it set to "Allow fragmented packets" ... yeah?

- m0n0 - Interfaces - WAN
I have unchecked the "Block private networks" checkbox: because mty router 
lies in a 192.168.0.n address space - I should do this... right?

Thanks for any assist.

Oh, and as an aside, every time I see that - Interfaces: WAN - BigPond 
configuration - section, I get all warm and fuzzy inside.

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