Re: Forwarding multiple UDP ports

["Oliver Schulze L." <oliver@samera.com.py>]

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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