Re: [GnomeMeeting-list] Problems talking to Net Meeting 3.0



Hi Colin,

> /sbin/iptables -t nat -A PREROUTING -i ppp0 -p tcp -d 80.177.30.27 --dport 1720 -j DNAT --to 10.0.1.5:1720
> /sbin/iptables -A FORWARD -i ppp0 -o eth1 -p tcp -m state --state NEW --syn -d 10.0.1.5 --dport 1720 -j ACCEPT
> Forwarding tcp 80.177.30.27:1720 to 10.0.1.5:1720
> /sbin/iptables -t nat -A PREROUTING -i ppp0 -p tcp -d 80.177.30.27 --dport 30000:30010 -j DNAT --to 10.0.1.5:30000:30010
> /sbin/iptables -A FORWARD -i ppp0 -o eth1 -p tcp -m state --state NEW --syn -d 10.0.1.5 --dport 30000:30010 -j ACCEPT
> Forwarding tcp 80.177.30.27:30000:30010 to 10.0.1.5:30000:30010
> /sbin/iptables -t nat -A PREROUTING -i ppp0 -p udp -d 80.177.30.27 --dport 5000:5007 -j DNAT --to 10.0.1.5:5000:5007
> /sbin/iptables -A FORWARD -i ppp0 -o eth1 -p udp -m state --state NEW -d 10.0.1.5 --dport 5000:5007 -j ACCEPT
> Forwarding udp 80.177.30.27:5000:5007 to 10.0.1.5:5000:5007
> /sbin/iptables -t nat -A PREROUTING -i ppp0 -p udp -d 80.177.30.27 --dport 5010:5013 -j DNAT --to 10.0.1.5:5010:5013
> /sbin/iptables -A FORWARD -i ppp0 -o eth1 -p udp -m state --state NEW -d 10.0.1.5 --dport 5010:5013 -j ACCEPT
> Forwarding udp 80.177.30.27:5010:5013 to 10.0.1.5:5010:5013
> Finished firewall (iptables) initialization
>   done

this looks like you're forwarding them OK. Are you dropping incoming
packets to those ports BEFORE you would forward them maybe? What are
your defaults for the outgoing NAT-masqueraded packets? Have you checked
the IP Translation in GnomeMeeting and it has detected your proper
external IP?

-- 
Best regards,
 Kilian

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