Hello pluggers, I'm having a firewall server having two ethernets. Let's say eth0 facing internet and eth1 facing secured internal LAN. In here, I've also setup one of our company's domain since we have 2 domains, (say it www.domain2.ph). I'm trying to forward all incoming packets to my mail server having an internal ip address of let's say, 192.168.1.5. I've used
iptables -t nat -A PREROUTING -i eth1 -p TCP --dport 25 -s 0.0.0.0/0 -j DNAT --to 192.168.0.2:25 iptables -A FORWARD -p TCP -d 192.168.0.2 --dport 25 -s 0.0.0.0/0 -j ACCEPT iptables -t nat -A PREROUTING -i eth1 -p TCP --dport 110 -s 0.0.0.0/0 -j DNAT --to 192.168.0.2:110 iptables -A FORWARD -p TCP -d 192.168.0.2 --dport 110 -s 0.0.0.0/0 -j ACCEPT iptables-save > /etc/sysconfig/iptables Testing from outside network: #telnet xxx.xxx.xxx.xxx 25 Trying xxx.xxx.xxx.xxx... #telnet xxx.xxx.xxx.xxx 110 Trying xxx.xxx.xxx.xxx... #nmap xxx.xxx.xxx.xxx 22/tcp open ssh 25/tcp filtered smtp 110/tcp filtered pop-3 How's this? Please help! Olive _ Philippine Linux Users Group. Web site and archives at http://plug.linux.org.ph To leave: send "unsubscribe" in the body to [EMAIL PROTECTED] Fully Searchable Archives With Friendly Web Interface at http://marc.free.net.ph To subscribe to the Linux Newbies' List: send "subscribe" in the body to [EMAIL PROTECTED]
