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Old 11-22-2015, 10:06 AM   #1
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Route all traffic, incoming and outgoing thru another machine


I hope someone can help me find the best solution for this scenario. The setup is kind of simple.

I have two servers with different public IPs (server A and B). I want server B to be "hidden" behind server A. All traffic to AND from server B should go thru server A (also outgoing so that the IP of server A is the one showing on all outgoing traffic).

The setup will experience high load during business hours so I need the best possible performance, encryption between the servers is not needed.

What solution do you recommend? Im running Ubuntu on both servers.

Thank you for your opinion.
Old 11-22-2015, 10:35 AM   #2
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For ipv4 use NAT in iptables on server A to hide server B. For traffic originating from B source NAT rewrites the source address on outbound packets and the dest address of inbound packets. If you run services on B that need to be reachable from the internet you need port forwarding and dest NAT.
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Old 12-03-2015, 02:02 PM   #3
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Thank you.

I googled your solution and came across this article with some working examples:

So, problem solved.



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