I have a special task to complete: I need to configure a Linux cloud server to act as a proxy for another server halfway around the world. Basically, this Linux will have a public IP address 1.2.3.4 and will listen on port 1000. If a client establishes a connection with it, it should forward all traffic to another server 2.3.4.5 port 1000, also on the public internet. Questions: - I'm not sure if this is a NAT or route relationship? - Do I need 2 eth interfaces for this? - Do I need 2 IP addresses for this, or can it be done with one? - Can I setup this forwarding with iptables or route alone, or do I need a specialized proxy software?
