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10.05.2008 at 02:07AM PDT, ID: 23788328
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9.1

how to create a tcp tunnel with "transparent reconnection"

Asked by dportabella in Unix Networking, SSH / Telnet Software

Tags:

ssh -f -N -L 2222:myremotemachine.com:3333 myremotemachine.com
Specifies that port 2222 on the local (client) host is to be forwarded to myremotemachine.com:3333.
This works by allocating a socket to listen to port 2222 on the local side. Whenever a connection is made to this port, the connection is forwarded over the secure channel, and a connection is made to myremotemachine.com:3333 from myremotemachine.com.

This works pretty well.

However, my client machine is inside a firewall that closes all connections after two hours. This is a hard constraint and it cannot be changed, and sending keep alive messages or anything else does not help.


the question is:
is there an equivalent to this: ssh -f -N -L 2222:myremotemachine.com:3333 myremotemachine.com
with the option of "transparently reconnecting" whenever the tunnel connection is broken?

by "transparently reconnecting" I mean that when the tunnel connection is broken,
the connection of the local application to localhost:2222 is not closed, nor is the connection from myremotemachine.com to myremotemachine.com:3333,
so that the application does not even notice that the tunnel connection was broken.

ps: is this a standard feature? does it have a proper name?
pss: i would prefer to install a standalone light software to both machine for this,
instead of complex and heavy solutions as installing a real vpn.
psss: one computer is running osx and the other is running mswindows with cygwin and open ssh server.

Regards,
DAvid
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[+][-]10.06.2008 at 03:23AM PDT, ID: 22648562

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[+][-]10.06.2008 at 04:42AM PDT, ID: 22648953

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[+][-]10.06.2008 at 05:15AM PDT, ID: 22649168

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[+][-]10.06.2008 at 11:33AM PDT, ID: 22652951

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[+][-]10.06.2008 at 12:51PM PDT, ID: 22653747

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About this solution

Zones: Unix Networking, SSH / Telnet Software
Tags: tcp forwarding
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Solution Provided By: gheist
Participating Experts: 2
Solution Grade: A
 
 
[+][-]10.14.2008 at 01:25AM PDT, ID: 22709434

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