Randy,

IPChains on RH72 (or any 2.4.x kernel distribution) 
is an emulation layer (in module form) on top of 
IPTables. If NetMeeting needs port forwarding or 
redirection to make it work properly you will 
probably need to drop the IPChains emulation 
layer and convert your rules for IPTables. The 
external programs IPChains used to make port 
forwarding and redirection work will not work with 
the emulation layer.

So, I think now is the time you absolutely have to 
convert or go backwards. 

Once you do wrap your head around IPTables, 
though, I think you will appreciate it's advantages 
over IPChains.

Good luck,

Troy

>>> rclark at lakesplus.com 08/22/02 12:28PM >>>
Ok ... I have RH7.2 running an IPCHAINS firewall (it has worked before
so I
thought why convert to iptables until I absolutely have to).

I have a Win2000 box behind the firewall on an internal network and I
want
to be able to call out with NetMeeting for video conferencing.  On a
Caldera
2.2.X kernel I used IP Masquerading.  What is the equivalent on RH7.2
with a
2.4.X kernel and does anyone know of a HOW-TO that exists out there?

There is one IP that I need to connect to on a weekly basis.  I have
them listed in my firewall to have full access, but even with that, the
last couple of times we have videoconferenced they can hear me and see
me (sometimes hangs), but I can not hear or see them.  Nothing shows up
in the log file as well.  The "chat" version of NetMeeting works fine.

Many thanks in advance.

Randy Clarksean, Ph.D., P.E.
Leading Technology Designs, Inc.
106 North Boardman Ave.
P.O. Box N
New York Mills, MN  56567

"Science is organized knowledge. Wisdom is organized life." - Immanuel
Kant 

ph: 218-385-3750
fax:218-385-3751
email: rclark at lakesplus.com