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I have a database server, let's call it:


I have a web server with access to my dbserver, let's call it:


I have a development machine that I'd like to use to access a database on dbserver, let's call it:


dbserver has a firewall rule set to allow TCP requests from webserver to dbserver:1433

I'd like to set up a tunnel from dev:1433 to dbserver:1433, so all requests to 1433 on dev are passed along to dbserver:1433

My sshd_config on webserver has the following rules set:

AllowTcpForwarding yes
GatewayPorts yes

This is what I've tried (from dev):

ssh -v -L localhost:1433:dbserver:1433 webserver

In another terminal (also from dev):

telnet localhost 1433

Results in:

Trying ::1...
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.

Any idea what I'm doing wrong here? Thanks in advance!

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Please mark the solution as the answer, for the benefit of future users. – Zayne S Halsall Apr 27 '10 at 9:33
ssh -v -L 1433:localhost:1433 webserver
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Found the solution, this was pretty close, but skipped one step. Thanks for your help. – Patrick Klingemann Apr 26 '10 at 17:31
up vote 1 down vote accepted

Here was the solution I found:

ssh -v -L 1433:dbserver:1433 webserver -f -N
telnet localhost 1433

Connects me.

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