En réponse à Simon Tatham :
> You should have:
>
> in the main window: user2@pc2 // port 22 // SSH
> in the proxy config panel: local
> local proxy command: plink user1@pc1 tcpconnect pc2 22
> or: plink user1@pc1 -nc pc2:22
> or better still: plink user1@pc1 -nc %host:%port
>
> The thing that goes in the `local proxy command' box is exactly the
> text you would have put after `ProxyCommand' in OpenSSH

All right.
A little problem then... I don't manage to enter my password.

The screen remains black and I can't do anything:

Incoming raw data
00000000 55 73 69 6e 67 20 6b 65 79 62 6f 61 72 64 2d 69 Using keyboard-i
00000010 6e 74 65 72 61 63 74 69 76 65 20 61 75 74 68 65 nteractive authe
00000020 6e 74 69 63 61 74 69 6f 6e 2e ntication.
Incoming raw data
00000000 0a .
Incoming raw data
00000000 50 61 73 73 77 6f 72 64 3a 20 Password:


I tried to put the password in the field and then \n%pass and lots of
other things but it doesn't seem to work.
By the way, a « plink user1@pc1 -nc %host:%port -pw test » doesn't work
with PuTTY while the same command launched in cmd works well.

--
Iulius

« L'homme a imaginé le cercle avant de savoir que la terre était ronde.
Ça prouve quand même une certaine faculté d'invention. » (Jacques Sternberg)