How to enable Iptables with Netmeeting

[berkeley_147]

Hi all,

I''m using Fedora Core 3 firewall ( NAT ).I have faced netmeeting probelm .. External to Internal. I can call Internal MS XP to External MS XP. ... How to configure .. external to local xp.
OUTSIDE IP: 10.242.194.20 xp PC

FC 3 NAT = ext ip 10.242.194.19
NAT = int ip 10.10.10.10

inter network ip 10.10.10.9

I want to get netmeeting with 10.242.194.20 to 10.10.10.9

I've got below info .. but this error
http://www.cryogenic.net/nmproxy.html
mproxy#./nmproxy_install
This software may only be used by a non-profit entiity.
Will this software only be used by a non-profit entiry? ( Y or N ) [N] y
cp: cannot stat 'nmproxy.Linux' : No such file or directory
anyone can help ?

Thanks in advance

[Galdron]

Greets Berkely,


Can you explain more specifically what you are trying to do? (the reason for the meeting and the IP's) The "Non-profit" message may be serial key issue.

Did you purchase the program? Or is it cracked?

[berkeley_147]

Just i want to get netmeeting external PC to NAT firewall internal PC.
it is completely free not for commercial use .

[IKnowNot]

Did you build it from the source you downloaded before trying to install it?


make -f Makefile.Linux

[berkeley_147]

yap,

I tried that ,

make -f Makefile.Linux
cc -g -DDEBUG -wall -c h225.c
make: *** [h225.0] Error 127

.. got this error.
any idea ?

[IKnowNot]

make -f Makefile.Linux
cc -g -DDEBUG -wall -c h225.c
make: *** [h225.0] Error 127

AFAIK, it could be a path problem, lib problem, etc.

Make sure your system is up-to date and you have all the necessary gcc files loaded
For this box ( FedoraCore 3 ),
$ rpm -qa |grep gcc
gcc-objc-3.4.4-2.fc3
gcc-3.4.4-2.fc3
gcc-c++-3.4.4-2.fc3
gcc-java-3.4.4-2.fc3
libgcc-3.4.4-2.fc3
gcc-g77-3.4.4-2.fc3

Then delete the directory and rebuild it with
tar -xzvf nmproxy_src.tar.gz

change to that directory and try again.

make -f Makefile.Linux

If that doesn't work, ( I don't know what permissions or path you gave the user you are utilizing ) try
su -
that will give you root privileges and include root's path. Now change back to the nmproxy directory and try again.

If you still get the same problem, try

make -d -f Makefile.Linux > problem.txt

review the file problem.txt to see if you can find where it is failing, if not, attach it here, maybe someone can help further.

[cacosapo]

you dont need a proxy to run netmeeting thru a linux box.
You just need a good iptables config.
You need to add nat rules to config, such as this:

iptables -A PREROUTING -t nat -p tcp -d your.public.ip --dport 1720 -j DNAT --to your.internal.ip:1720
iptables -A FORWARD -p tcp -d your.internal.ip --dport 1720 -o your.internal.adapter -j ACCEPT

Another way is install conntracks for h.323. I think they are ip_conntrack_h323 and ip_nat_h323, but i've never used those.
There is some documentation on www.netfilter.org about them.

[berkeley_147]

Thanks
IKnowNot and cacosapo,

When i type this line,
iptables -A FORWARD -p tcp -d your.internal.ip --dport 1720 -o your.internal.adapter -j ACCEPT
error:=>> #iptables: no chain/target/match by this name
How sould i do next step ?

[berkeley_147]

Thanks
IKnowNot and cacosapo,

When i type this line,
iptables -A FORWARD -p tcp -d your.internal.ip --dport 1720 -o your.internal.adapter -j ACCEPT
error:=>> #iptables: no chain/target/match by this name
How sould i do next step ?

[cacosapo]

err...
i hope that i you had replaced "your.internal.ip" and "your.internal.adapter" by your ip address and your linux ethernet adapter name
Otherwise i dont think you have enough basic knowledge to deal with linux. Perhaps a friend of your can help you on this matter?