Looking for ssh help

Some time ago we pieced together a document (see attached ) for our site describing how to use Putty on a remote PC to set up an SSH tunnel from that PC, through an SSH server, to our TS server(s) and make it possible to then run a browser on the local machine and communicate with the TS server that was otherwise protected from outside access.

Well - I really prefer using my Mac to using my PC, but there's no Putty for the Mac. There is, however, SSH; and it would seem to me that whatever Putty is doing on the PC to establish the tunnel I should be able to do with plain-old-ssh just as well .... if I knew what the full command line was supposed to look like! (I can't seem to find anywhere in Putty where I can get it to show me the command its executing to set things up).

So - I'm hoping some SSH-savvy person out here might be able to provide me with the command-line equivalent to the Putty settings shown in the attached document. [* the attached document has had to be significantly gutted of images in order to make it small enough to be uploaded to DevNet - sorry - If you want a copy of the full-size document, send me a message with your email]

--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com

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jed

I do not have a mac, but I think it uses openSSH? Any idea?

If so, it should be as simple as this:

ssh -L 2000:tsserver:80 foo@tsserver.com

Open up you web browser and put in the following:

http://tsserver:2000

OpenSSH also has a cool feature called dynamic forwading. Using this, it will mimic a socks 4 proxy. That would look something like this:
ssh -D 1111 foo@tsserver.com

Open up your browser and put in the following as a socks 4 proxy host (make sure you do not have a http proxy specified):
localhost:1111

Now go to your browser and enter try to go to the TS server (sometimes you have to use the ip address if the host name is not known on the public internet).
http://tsserver

Is this what you are looking for?

--
Jed Michnowicz
jedm@sun.com
Content Management Engineer
Sun Microsystems

Adam Stoller

I believe it is openssh - but unfortunately the command you are showing is the command I need to run somehow on (or through) the remote intermediary sshserver.

[Mac] <-> [sshserver] <-> [tsserver]

That's what seems to be relatively easy to do via Putty which I'm having trouble understanding how to do with [open]ssh.

I can do two single hops ([Mac]->[sshserver]; [sshserver]->[tsserver]) but that doesn't provide me the kind of connectivity I need to get port 80 on the tsserver connected to port 9999 (or whatever) on my Mac.

--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com

jed

Assuming the mac can connect to the ssh server and the ssh server can connect to the ts server, this should work:

ssh -L 2000:tsserver:80 foo@sshserver.com

This would create a socket on the local mac server on port 2000 to the tsserver.

--
Jed Michnowicz
jedm@sun.com
Content Management Engineer
Sun Microsystems

skip11

Hi,

Maybe proxytunnel is what you need:

http://proxytunnel.sourceforge.net/

this allows an ssh tunnel through a proxy (you have one of those I bet) within a network or out to the public internet.

take a look at the Introduction and usage in the site map at the top of the page.

for my config I have this: ProxyCommand /usr/local/bin/proxytunnel -g <proxy host> -G 8080 -d <ip to tunnel to> -D 22

R.Barger
Credit Suisse Group
Zurich, Switzerland

Edited by skip on 02/01/05 03:42 AM (server time).

Adam Stoller

Thanks, but it still doesn't seem to work - at least not the way I'm looking for.
I'm assuming that for my purposes it would be:

proxytunnel -g sshserver -G 80 -d tsserver -D 9999

but trying that I end up with an "Error! connect() failed: Operation timed out"

And I don't think I'm looking for a proxy tunnel per-se - I'm looking for an ssh tunnel with (I believe) port forwarding

Thanks anyway

--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com