Hello,
Grant Taylor a écrit :
Tim Perton wrote:
I want my users to do a request like
http://a.b.c.d/1.php and then machine A to make the
same request to System B, get the results and send
them back to the user transparently.
Technically you can do what you are wanting to do. However there are a
few caveats that you need to be aware of when doing such.
1) System B will see System A as the connecting host, not the real client.
This can be avoided. See below.
2) If System B is not ""behind System A (as you have described it to
not be) it will have to send the traffic back to System A which will
then send the traffic back to the client.
This is the reason of the 1). In order for B to send replies to A, A has
to SNAT the forwarded connection with its own IP address. Unless you set
up some tunnel or VPN between A and B and use it for the forwarded
connexions (in both direction, so it may involve some advanced routing
on A for return traffic), making B virtually "behind" A.
client ---internet--- system A (NAT) ===tunnel=== system B (server)
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