Ssh

Programação Java
#1

Pessoal,

Estou usando a Ganymede SSH para conexão ssh, quero usar ela para acesso a equipamentos da onde trabalho, poreḿ tenho um problema quando eu conecto em uma maquina linux funciona normalmente o código abaixo, agora quando eu faço a conexão para o equipamento é lançado a exceção

public class Main {

    public void connect(){

    }

    public static void main(String[] arg) throws InterruptedException {


		String hostname = "10.227.1.1";
		String username = "manager";
		String password = "";

		try
		{
			/* Create a connection instance */

			Connection conn = new Connection(hostname);

			/* Now connect */
                        
			conn.connect();
                        

			/* Authenticate.
			 * If you get an IOException saying something like
			 * "Authentication method password not supported by the server at this stage."
			 * then please check the FAQ.
			 */

			boolean isAuthenticated = conn.authenticateWithPassword(username, password);


                        

                        
			if (isAuthenticated == false)
				throw new IOException("Authentication failed.");

			/* Create a session */

			Session sess = conn.openSession();

                       
			sess.execCommand("ls");

	

			InputStream stdout = new StreamGobbler(sess.getStdout());

			BufferedReader br = new BufferedReader(new InputStreamReader(stdout));

			while (true)
			{
				String line = br.readLine();
				if (line == null)
					break;
				System.out.println(line);
			}

			/* Show exit status, if available (otherwise "null") */

			System.out.println("ExitCode: " + sess.getExitStatus());

			/* Close this session */

			sess.close();

			/* Close the connection */

                        
			conn.close();

		}
		catch (IOException e)
		{
			e.printStackTrace(System.err);
			System.exit(2);
		}
	}
}
run:
java.io.IOException: The execute request failed.
        at ch.ethz.ssh2.channel.ChannelManager.requestExecCommand(ChannelManager.java:703)
        at ch.ethz.ssh2.Session.execCommand(Session.java:249)
        at javaapplication10.Main.main(Main.java:62)
Caused by: java.io.IOException: This SSH2 channel is not open (Close requested by remote)
        at ch.ethz.ssh2.channel.ChannelManager.waitForChannelSuccessOrFailure(ChannelManager.java:174)
        at ch.ethz.ssh2.channel.ChannelManager.requestExecCommand(ChannelManager.java:699)
        ... 2 more
Java Result: 2
#2