03-30-2017
It looks as the three hosts are on the same subnet. In this case you cannot use "static routes" because any route - static or else - just defines a way to get from one subnet to another, not to get somewhere on the same subnet.
You may want to define a "proxy" server, but you will have to install additional software (which one depends on which protocols you want to be affected by the proxy) on at least the B-server where you want to route the traffic through.
Another possibility is to put the systems on different subnets: A goes to one subnet, C goes to another subnet and B has one interface in in both these networks AND has "IP-forwarding" enabled. This way you can enforce all packets between A and C to go through B and - using a firewall software, you can even apply additional rules for which packets to allow and which to drop (forbid).
I hope this helps.
bakunin
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