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How-To:Port Forwarding: Difference between revisions
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[[PuTTY]] has built-in support for port forwarding. | [[PuTTY]] has built-in support for port forwarding. | ||
* When you're connecting, after you've filled in the host name box ('''NOTE:''' If you wish to forward traffic through the DCU proxy the host name '''must''' be | * When you're connecting, after you've filled in the host name box ('''NOTE:''' If you wish to forward traffic through the DCU proxy the host name '''must''' be login.redbrick.dcu.ie), click on Tunnels in the left-hand bar (second last item from the bottom). | ||
* In the Port forwarding box, fill in the following values: | * In the Port forwarding box, fill in the following values: | ||
** Source port: (the port you want forwarded to the proxy - eg 1337) | ** Source port: (the port you want forwarded to the proxy - eg 1337) | ||
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If you read the neworder guide above you should have a good idea of how to build the SSH command for the forwarding, like so: | If you read the neworder guide above you should have a good idea of how to build the SSH command for the forwarding, like so: | ||
ssh -L 1337:proxy.dcu.ie:3128 | ssh -L 1337:proxy.dcu.ie:3128 login.redbrick.dcu.ie | ||
Where : | Where : | ||
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* proxy.dcu.ie is the server you want to send your tunnelled traffic to. | * proxy.dcu.ie is the server you want to send your tunnelled traffic to. | ||
* 3128 is the port on that server you want to send your tunnelled traffic to. | * 3128 is the port on that server you want to send your tunnelled traffic to. | ||
* | * login.redbrick.dcu.ie is the server you want to open the SSH connection to | ||
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For example, to tunnel local port 1337 to the SOCKS proxy on proxy3.dcu.ie through deathray: | For example, to tunnel local port 1337 to the SOCKS proxy on proxy3.dcu.ie through deathray: | ||
ssh -L 1337:proxy3.dcu.ie:1080 | ssh -L 1337:proxy3.dcu.ie:1080 login.redbrick.dcu.ie | ||
Here we see that we specify the proxy definitively, and use the port that we | Here we see that we specify the proxy definitively, and use the port that we | ||
would eventually negotiate (for those of you is res try running Wireshark, you will | would eventually negotiate (for those of you is res try running Wireshark, you will | ||
see what I mean). We also use a specific Redbrick server, | see what I mean). We also use a specific Redbrick server, Login (minerva) for our port | ||
forwarding (there are restrictions on tunnelling through our other machines). You can also add the ''-v'' option to specify 'verbose' mode and see the port being opened and closed for your tunnelled traffic. | forwarding (there are restrictions on tunnelling through our other machines). You can also add the ''-v'' option to specify 'verbose' mode and see the port being opened and closed for your tunnelled traffic. | ||