public boolean isEstablished() {
        return this.isEstablished;
    }

    /**
     * Gets the server's NTLM challenge bytes.
     * @return the server's challenge
     */
    public byte[] getServerChallenge() {
        return this.serverChallenge;
    }

    @Override
    public byte[] getSigningKey() {
        return this.masterKey;
    }

    @Override
    public String getNetbiosName() {