Hi Jan,
sorry about not specifying.
INTRA_SERVER: intranet ip of the server initiation the udp traffic to
the INTRA_ROUTER IP
INTRA_ROUTER: intranet ip of the router
INET_IP: a random public IP
The traffic flow should be:
INTRA_SERVER -> intranet -> INTRA_ROUTER -> internet -> INET_IP
Explanation:
INTRA_SERVER sends UDP traffic to the INTRA_ROUTER IP, then, INTRA_ROUTER
forwards those packets to the public IP INET_IP
Thanks
Oliver
Jan Engelhardt wrote:
My question is: can I forward UDP trafic from and internal server to the
Internet?
Can I use this line:
iptables -t nat -A PREROUTING -p udp -s INTRA_SERVER -d INTRA_ROUTER
--dport 1024:6000 -j DNAT --to-destination INET_IP:1024-6000
I'm testing it and I see the rule matched, the byte and packet counters are
incrementing.
But, I see no traffic going out of the Internet NIC.
I'm not sure if the multi-port specification will work.
Who is INET_IP? Is it the same host as INTRA_ROUTER?
Jan Engelhardt
--
Oliver Schulze L.
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