ssh tunnel problem

Cantab.

I've got this setup:

(laptop) --c1-- (machineA) --c2-- (machineB)

c1 is connection 1: ports 22, 80 and 443 are open, all the rest closed
c2 is connection 2: ports 22, 80 and 443 are open, all the rest closed

I've root access on 'laptop' and 'machineB', I've an account on 'machineA' and can't make config changes.

I would like to get gFTP (ssh protocol) working.

On 'laptop' I do:

laptop> ssh -L 9999:machineB:22 username@machineA

I then try and connect "directly" to machineB using:

laptop> ssh username@localhost:9999

^^^ this isn't working! I get the following error:
"ssh: Could not resolve hostname localhost:9999: Name or service not known"

When I type http://localhost:9999 into my internet browser, I get the following:

"SSH-2.0-OpenSSH_4.7p1 Debian-8ubuntu1.2", so something is definitely happening on localhost, port 9999.

My ultimate objective is to be able to fill in the username, address and port fields in gFTP as cantab, xxx.xxx.xxx.xxx and 9999 respectively.

I'm completely stumped... Anyone have any suggestions?

utopian

should that not be ssh -p 9999 username@localhost?

gnxx

Try ssh localhost -l <username> -p 9999

Cantab.

utopian wrote: »

should that not be ssh -p 9999 username@localhost?

Thanks for that!

I was just about to paste this solution which I tried literally 30 seconds ago:

ssh -p 9999 -l cantab localhost

Works a treat!

You're dead right!

I don't know why my original syntax wouldn't work... How and ever.

Do you know, I filled in the fields in gFTP and I got a perfect connection! I just presumed it wouldn't work in gFTP cos it wasn't working on the command line.

Cantab.

Anyone got any advice as to how I can run rsync over ssh? (server structure as in OP -- I want to rsnapshot to do a daily backup from 'machineB' to 'laptop' -- yes, 'laptop' is permanently fixed to the web...)

Rsync needs port 873

Could I do:

ssh -p 9999 873:machineB:22 cantab@localhost

These ssh tunnel gymnastics are making me go dizzy...

Khannie

you can use rsync over ssh with the following command line option:

--rsh=ssh

Cantab.

Khannie wrote: »

you can use rsync over ssh with the following command line option:

--rsh=ssh

You legend!

Gosh, boards has been particularly useful over the last two days.

I've just modified my rsnapshot.conf file to accomodate that.

'rsync_long_args --rsh=ssh'

I'm really learning things the hard way over here...

Khannie

Ah, I wouldn't beat yourself up. It's a bit of a long learning process with unix. You pick up stuff like this along your travels, then 5 years from now you'll come across some problem and remember this.