problems using ipmasqadm

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Author: Hawkeproudhawk19021@home.com
Date:  
Subject: problems using ipmasqadm
heres the story..
I have ipchains already acting as the IP_MASQ. no problem.
most of my apps work fine that way from the windows box.
HOWEVER, when I follow the instructions on the dialpad.com help
page for using dialpad through a linux IP_MASQ/firewall, then
icmp packets won't forward properly, dialpad fails to work and
my network communications from this box (192.168.0.2) are no
longer being sent to 24.21.77.91, period.

It takes a reboot of linux to erase the problem and reset to
what I had before (ipchains with IP_MASQ).

now, is there a way I can have the ports on 192.168.0.x
mapped such that they appear to be the same ports
going out on 24.21.77.91 (i.e. port 7175 on eth1 is transmitted
both directions <192.168.0.2.7175 <> 24.21.77.91:7175>).

IP_MASQ tends to translate the ports up toward the lower end of 61000
and this will not sue for dialpad.

any other solutions would be greatly appreciated.

One solution: get a routable IP for the second machine and set up
gated/routed and get a name server on the net to see it (such as
pcA (routabel ip)>eth1>eth1(24.21.77.91)>network)

HELP!