Hi all I've got a pb about NAT and I can't resolve it. I have a gateway (linux slackware) called "A" connected to the net through ADSL. My others computers of my lan connect to the internet through this one. This is what I put in the rc.local file :
modprobe iptable_filter modprobe iptable_nat iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE echo 1 > /proc/sys/net/ipv4/ip_forward iptables -A PREROUTING -t nat -p udp -d 217.128.80.91 --dport 8888 -j DNAT --to 10.0.0.1:6220 iptables -A PREROUTING -t nat -p udp -d 217.128.80.91 --dport 8889 -j DNAT --to 10.0.0.3:6220 iptables -A OUTPUT -t nat -p udp -d 217.128.80.91 --dport 8888 -j DNAT --to 10.0.0.1:6220 iptables -A OUTPUT -t nat -p udp -d 217.128.80.91 --dport 8889 -j DNAT --to 10.0.0.3:6220 I have got a game server hosted on "A". All works fine : internet, games but the trouble is that the game appear very slow (normally, it is not) when we are at least 3. I am not sure but I think that the iptable DNAT is not working fast, is that true ? If yes, how can I improve that ? Thanks a lot, Thai.
