Ssh port fowording double firewall

PogMat · 12-14-2012, 11:13 AM

Hi everyone,
I have a home pc (I'll call it desktop-pc) behind a firewalled router which maps standard ssh port 22 to the same port on desktop-pc. In my office I have my computer (office-pc, from now on) behind a sophisticated firewall system (say a gateway); however, using a gateway I can normally access to it (using ssh port 22).
Now I'm trying to have the stream coming from my desktop-pc webcam directly on office-pc, with an encrypted ssh tunnel. Let me explain in more detail -

1) I open vlc on desktop-pc and I start to broadcast the stream of my webcam on localhost:10000
2) On office-pc i type "ssh -L 9999:localhost:10000 user_on_desktop-pc@desktop-pc_IP"
3) On office-pc i type "vlc http://localhost:9999"

and I get a lot of errors:

[0x7fc2d4001398] access_http access debug: asking libproxy about url 'http://localhost:9999'
[0x7fc2d4001398] access_http access debug: libproxy suggest to use 'direct://'
[0x7fc2d4001398] access_http access debug: http: server='localhost' port=9999 file=''
[0x7fc2d4001398] main access debug: net: connecting to localhost port 9999
[0x7fc2d4001398] main access debug: connection succeeded (socket = 4)
[0x7fc2d4001398] access_http access error: failed to read answer
[0x7fc2d4001398] access_http access debug: switching to HTTP version 1.0
[0x7fc2d4001398] main access debug: net: connecting to localhost port 9999
[0x7fc2d4001398] main access debug: connection succeeded (socket = 4)
[0x7fc2d4001398] access_http access error: failed to read answer
[0x7fc2d4001398] main access debug: net: connecting to localhost port 9999
[0x7fc2d4001398] main access debug: connection succeeded (socket = 4)
[0x7fc2d4001398] access_mms access error: failed to read answer
[0x7fc2d4001398] main access debug: no access module matching "http" could be loaded
[0x7fc2d4001398] main access debug: TIMER module_need() : 191.539 ms - Total 191.539 ms / 1 intvls (Avg 191.539 ms)
[0x7fc2e0000b28] main input error: open of `http://localhost:9999' failed

Can someone help me?

Thanks a lot
PoggMatt

P.S.: I tried to do the same thing locally (on my home net) and all worked

unSpawn · 01-13-2013, 12:12 PM

Quote:

Originally Posted by PogMat

Code:

[0x7fc2d4001398] main access debug: connection succeeded (socket = 4)
[0x7fc2d4001398] access_http access error: failed to read answer
[0x7fc2d4001398] main access debug: connection succeeded (socket = 4)
[0x7fc2d4001398] access_http access error: failed to read answer
[0x7fc2d4001398] main access debug: connection succeeded (socket = 4)
[0x7fc2d4001398] access_mms access error: failed to read answer

So it tried two access methods but the answer (if any) didn't match either HTTP or MMS. I'd try 'curl -v' or netcat on the URI and see what it actually returns and check the remote server logs for any clues.

//NTLB