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Network Security Secure-Shell
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X-like Port Forwarding

from [Charles Ritter] Network Security [Permanent Link]
Subject: X-like Port Forwarding
Date: Wed, 8 Aug 2007 17:18:12 -0400 
Hello,

Does SSH support forwarding miscellaneous ports between two firewalled
hosts? My scenario is this:


         12345-|                    |-12345
MyPC          |---------------22-|           Server
           6000-|                    |-6000


Forwarding 12345 on server to MyPC:

ssh -R 12345:mypc:12345 server

This seem to work as long as mypc can be resolved by the server.
However, it does not work when mypc is NAT'd and unresolvable.
Shouldn't it work though? Considering I initiated the connection,
shouldn't the remote server be able/willing to send the data? X11
forwarding works in this case, and with a much simpler syntax:

ssh -Y server

Shouldn't something like this work in this case:

ssh -R 12345:localhost:12345 server
ssh -R 12345::12345 server
ssh -R 12345 server

Am I missing something?

Thanks
Chuck
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