com.jcraft.jsch.JSchException: Packet corrupt
    at com.jcraft.jsch.Session.start_discard(Session.java:1067)
    at com.jcraft.jsch.Session.read(Session.java:937)
    at com.jcraft.jsch.Session.connect(Session.java:309)
    at com.jcraft.jsch.Session.connect(Session.java:183)
    at com.att.ncaas.device.connection.ssh.SSHConnectionJSch.connect(SSHConnectionJSch.java:120)

public void connect () {
    ChannelExec channelExec = null;
    JSch jSch = new JSch();
    Session session = null;
    try {
        session = jSch.getSession(userid, ipAddress, port);
        // Set the password.
        session.setPassword("XXXXXXXXX");
        Properties properties = new Properties();
        properties.put("StrictHostKeyChecking", "no");
        // Set the Ciphers.
         * properties.put("cipher.s2c", "aes128-cbc"); properties.put("cipher.c2s",
         * "aes128-cbc"); properties.put("CheckCiphers", "aes128-cbc");
        session.setConfig(properties);
        // Finally make the connection.
        session.connect();
        channelExec = (ChannelExec) session.openChannel("exec");
        // Command 1
        channelExec.setCommand("show run");
        ByteArrayOutputStream responseStream = new ByteArrayOutputStream();
        channelExec.setOutputStream(responseStream);
        channelExec.connect();
        while (channelExec.isConnected()) {
            Thread.sleep(1000);
        String responseString = new String(responseStream.toByteArray());
        System.out.println("Show Run Output:\n");
        System.out.println(responseString);
        if (session.isConnected()) {
            System.out.println("Wooooooooooooooooooohoooooooooooooooooooooooo!!!!");
        } else {
            session.connect();
        // Command 2
        channelExec.setCommand("show version");
        channelExec.connect();
        while (channelExec.isConnected()) {
            Thread.sleep(1000);
        responseString = new String(responseStream.toByteArray());
        System.out.println("Show Version Output:\n");
        System.out.println(responseString);
    } catch (JSchException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (session != null) {
            session.disconnect();
        if (channelExec != null) {
            channelExec.disconnect();