Port Forwarding

[HKNinja]

Hi,

I got a port forwarding problem here with my Linux server. Here is the setting, the Linux server is our company's Internet gateway and all other workstations are behind it. Now, I need to forward a couple of ports to one of our Mac server so users can connect to the Mac server via Internet. What is the best way to do it and how? Many thanks!

- Harry

 

[kubla]

Assuming you're running iptables, you'll want to append a rule like this to your firewall:

iptables -A PREROUTING -t nat -p tcp -d <IP ADDRESS OF YOUR EXTERNAL INTERFACE> --dport <EXTERNAL PORT> -j DNAT --to <IP ADDRESS OF MACHINE ON LAN>:<DESTINATION PORT>

http://www.robertgraves.org

 

[HKNinja]

No, I am not running IPtabls. I'm running a Mandrake 7.2 Linux and I suspected that I should be using the ipchains to do that. Any more suggestion?

 

[tarn]

Have you looked at

http://en.tldp.org/HOWTO/IP-Masquerade-HOWTO/forwarders.html

Or you could set-up a ssh tunnel and do it that way but its probably a bit slow for what you need?

Oh! and this is always a useful site to visit:

http://www.linux-firewall-tools.com/

Good Luck,
Laurie.