Hello,
Supposing we have 3 systems, A, B and C, here is how I do it in my
application:
JSch jsch = new JSch();
session = jsch.getSession(
"<username on system B>",
"<hostname of system B>",
"<ssh port on system B>");
UserInfo ui = MyUserInfo();
session.setUserInfo(ui);
session.connect();
// Setup port forwarding
int assinged_port = session.setPortForwardingL(
0,
<hostname of system C>,
<ssh port on system C>);
// Connecting to remote system through port forwarding...
Session session2 = jsch.getSession(
<username on system C>,
"127.0.0.1",
assinged_port);
session2.setUserInfo(ui);
session2.connect();
// We are now connected to system C (through B).
// Lets run a command on system C
Channel channel = session2.openChannel("exec");
((ChannelExec) channel).setCommand(<command to run on C>);
channel.connect();
Hope this helps,
Andre
Antoine B wrote:
> Hello,
> What I want to do is simple :
> I want to connect on a server 'serv1', then with that connection opened I
> want to connect on a server 'serv2'. After that, I want to execute a script
> located on serv2.
> I want to do it automatically, without user's interaction (the users don't
> need to write in a shell for example).
> 'serv2' is only accessible from 'serv1' (no direct connnection is allowed).
> Is it possible with jsch?
> For the moment, I can open a connection on serv1, but the user had to type
> "ssh serv2" on the opened shell.
> Thanks and sorry for my english.
>
>
>
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--
Andre Charbonneau
Research Computing Support, IMSB
National Research Council Canada
100 Sussex Drive, Rm 2025
Ottawa, ON, Canada K1A 0R6
613 993-3129
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