hello oliver,
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 INPUT - p TCP -d 192.168.0.2 --dport 25 -s 0.0.0.0/0 -j ACCEPT iptables -A FORWARD -p TCP -d 192.168.0.2 --dport -s 0.0.0./0 -j ACCEPT cheers, ian perez > This has been my problem a month now.. I'm running a > redhat 7.3 firewall server with two NICs; eth0 facing > the internal network (192.168.0.x) and eth1 facing the > internet (external network). Now I wish to forward all > traffic on eth1, port 25 to another to my mail server > (say, 192.168.0.2). I did something like: > > iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -j > MASQUERADE > iptables -A FORWARD -p tcp --dport 25 -d 192.168.0.2 > -j ACCEPT > iptables -A PREROUTING -t nat -p tcp --dport 25 -d > x.x.x.x -j DNAT > --to 192.168.0.2 > > Now when i used to test SMTP connection thru > telnetting from another server... say: > > #telnet xxx.xxx.xxx.xxx 25 > > > Oliver > _ 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]
