How can I set up SSH tunneling to access a webserver behind a firewall?

You need to enter "80" into Source port and dev.server. Address:83 to Destination And don't forget to click the "Add" button before you leave the configuration screen. If you don't click that, PuTTY doesn't actually create a tunnel.

I fell for that gotcha quite a few times myself.

You need to enter "80" into Source port and dev.server. Address:83 to Destination. And don't forget to click the "Add" button before you leave the configuration screen.

If you don't click that, PuTTY doesn't actually create a tunnel. I fell for that gotcha quite a few times myself.

Thanks so much! That did it. – molecules Nov 25 '09 at 14:41.

I don't use PuTTY, but when I use SSH on my machine, I have to specify 127.0.0.1 instead of localhost.

Thanks for your answer. I thought that 127.0.0.1 and localhost were always equivalent (en.wikipedia. Org/wiki/Localhost), so I wonder whey it wouldn't work sometimes.

– molecules Nov 25 '09 at 14:56 I thought that too, believe me. I have no explanation as for why it isn't. – Reynolds Nov 25 '09 at 15:04.

If that is listening on port 80 localhost:80 won't work. Alternatively try mapping the source to a different port (12345 for eg.) and then try localhost:12345 in your browser.

Thanks for your answer. This wasn't the problem in this case, but it is something that I will keep in mind in the future. – molecules Nov 25 '09 at 14:49.

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