On Thu, 2004-11-18 at 08:56, Mattia Martinello wrote: > > why? > > Beacuse I want to call from my LAN the server using its public IP address. which has nothing to do with SNAT-ing your internal LAN. > > because you told it to... > > Can't I solve this problem? > > > don't NAT traffic from your LAN to your DMZ. if clients inside the LAN > > are requesting the public IP of the DMZ server and not it's actual DMZ > > IP, you'll need something along the lines of: > > See above... I always want to call the server using its public IP address. you need a DNAT rule that translates requests from your internal LAN to the public IP of DMZ server to the DMZ IP of DMZ server. > > other than that--you haven't provided near enough information to answer > > your questions (hint: post your rules [1]) > > This is my simple script: > > > #!/bin/sh > > modprobe iptable_nat > echo 1 > /proc/sys/net/ipv4/ip_forward > echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter > > iptables -F INPUT > iptables -F OUTPUT > iptables -F FORWARD > iptables -t nat -F POSTROUTING > iptables -t nat -F PREROUTING > iptables -t nat -F OUTPUT > > iptables -P INPUT ACCEPT > iptables -P OUTPUT ACCEPT > iptables -P FORWARD ACCEPT > iptables -t nat -P POSTROUTING ACCEPT > iptables -t nat -P PREROUTING ACCEPT > iptables -t nat -P OUTPUT ACCEPT > > iptables -t nat -A POSTROUTING -s 192.168.1.0/255.255.255.0 -o ppp0 -j > MASQUERADE > iptables -t nat -A POSTROUTING -s 192.168.1.0/255.255.255.0 -o eth0 -j > MASQUERADE > iptables -t nat -A POSTROUTING -s 192.168.1.0/255.255.255.0 -o eth2 -j > MASQUERADE > iptables -t nat -A POSTROUTING -s 192.168.2.0/255.255.255.0 -o ppp0 -j > MASQUERADE > > iptables -t nat -A PREROUTING -s 0.0.0.0/0 -d $EXTERNAL_IP -j DNAT --to > 192.168.2.99 assuming ppp0 is your external interface--delete both "-o ethX" MASQ rules. your are excessively NAT-ing for no good reason. the DNAT rule you have will translate requests from the internal LAN to $EXTERNAL_IP to 192.168.2.99 for you. > So all trafic to the external server IP seems to come from > 192.168.2.254. How I can avoid this? -j -- "Default! The two sweetest words in the English language!" --The Simpsons
