Thanks for your help. I will try to do it in the server. Is there any document that should read about this?
Barry Brimer wrote:
Yes.
I plan to use centos as the OS on the gateway server.
Barry Brimer wrote:
So you're trying to determine what you need to do to forward connections from your system to port 5555 on the remote system via your gateway it seems. What is your gateway running? Is it running CentOS?
I would use something like:
iptables -t nat -I PREROUTING -d <public ip address of server> -p tcp --dport 5555 -j DNAT --to <private IP address of database server>
If you are not already masquerading traffic out, this should handle that. "iptables -t nat -A POSTROUTING -s <internal network/mask> -j MASQUERADE"
Once you see that work, you can do a "service iptables save" to save the configuration and "chkconfig iptables on" to make sure it starts on boot.
Barry