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Old 08-21-2001, 06:26 PM   #1
LQ Newbie
Registered: Aug 2001
Location: Monterrey, Mexico
Distribution: Red hat 7.0
Posts: 1

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Angry Ip Route Voice Gateway

I have a e-smith server with RH7.0 with only 1 valid IP Add. the LAN is working fine.

but I have a VOip gateway instaled within my LAN, call generated from my lan can reach other h.323 GW but the Net2phone service is not working at all,

HOW can I route mi valid IP to the internal IP of my VOIP GW, with all the ports avaiable to be trasnparent for the VOIP GW,

My ISP give me another valid IP but have no bridge can LINUX route the other valid IP into my LAN? HOW?

Im really a newbie in Linux please explain as much as you can.



sorry for my english...
Old 08-22-2001, 10:43 AM   #2
LQ Newbie
Registered: Aug 2001
Location: Germany
Distribution: SuSE
Posts: 21

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if you know about the ports for the VOIP you dont need to have an extra IP. You can use portforwarding then.
Inform yourself about the ports that you need and setup the necessary
iptables rules.
you will need
something like:
iptables -t nat -p tcp (or udp ???) -d $EXT_IP --dport $PHONE_PORT -j DNAT --to $VOIP
iptables -I FORWARD -p tcp -d $VOIP -j ACCEPT
iptables -I FORWARD -p tcp -s $VOIP -j ACCEPT

or if you already have an extra IP, it must be routed into your LAN. Activate routing (dont know for RedHat) and proxy_arp on the extenal interface and add a routing rule
# route add host $VOIP dev $INT_IF

okay that needs some knowledge, otherwise you wont unterstand what you are doing.



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