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Home » Remote Desktop Manager - Bug Report » SSH Port Forwarding

12/14/2009 2:18:54 PM

sbonilla
sbonilla
Posts: 44
NOTE: Seems to only be a bug with PuTTY.

When trying to connect to Radmin clients behind a server running SSH, in the past I would use Tunnelier (great SSH client BTW) to forward ports to the appropriate machines.

I.E.:
127.0.0.1:50001 --> 192.168.0.1:4899
127.0.0.1:50002 --> 192.168.0.2:4899
...
127.0.0.1:50125 --> 192.168.0.125:4899

etc.etc.

So, I created these forwards for the whole subnet of 192.168.0.1-255, using ports 50001-50255, and when trying to connect through PuTTY with Remote Desktop Manager, I would just get a connection failed message.
I started removing port forwarding rules until I had about 5, which resulted in a "Out of space for port forwardings" message with PuTTY. I googled that and found this:

http://the.earth.li/~sgtatham/putty/0.60/htmldoc/Chapter10.html#errors-portfwd-space

This will be quite a hindrance for me. Hopefully we will see an update for that from PuTTY in the near future, although it looks like this hasn't been touched since 2004.
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12/14/2009 5:50:03 PM

dhervieux
dhervieux
Administrator
Posts: 1349
Hi,
You're right, it seems to be a bug in Putty, maybe you should use Tunnelier with a command line session type ?

David Hervieux
Devolutions inc.

--
David Hervieux
Devolutions inc.
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12/14/2009 5:52:15 PM

sbonilla
sbonilla
Posts: 44
hmm, I'll have to look into the command line session type thing

another option for me is to break apart the sessions... forwarding ~40 ports at a time and having my radmin connections point to the appropriate session. For the sake of end-user simplicity, this might be a better way to go for me.

I'll definitely play with the command line session option, I didn't pay much attention to that...
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2/13/2010 10:31:41 AM

sbonilla
sbonilla
Posts: 44
So far my solution to this is as I mentioned, to add multiple PuTTY SSH connections, sometimes 3 or 4, for a location that needs more than 39 port forwards. It seems to be fine. I was weary of creating these connections but once I got the hang of importing a host list with a template and exporting to .rdm and editing it as an .xml file using various methods, its been a breeze.
edited by sbonilla on 2/13/2010
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