Agent Server is used to bind listener and forwarder connection. If both side listener and forwarder connected with matched user name and password, no third party is allowed to break the connection. But if the third party (either listener or forwarder), entered the same user name and password, either connected listener or forwarder connection will break, and the third party will take place connection.
Sometimes you will find fail to connect with listener or forwarder even you input the correct user name and password, there must 1 side connected to Agent Server. To solve this case, reset connection by the following method.
1. Input the correct user name and password in listener client, press start(2) button, then press stop. This is forced to reset listener connection state to disconnected.
2. Input the correct user name and password in forwarder client, press start(3) button, then press stop. This is forced to reset forwarder connection state to disconnected.
3. Ok now, try to reconnect normally.....
Conclusion, the user name and password is very important. If you forget, and some computers are connected that you cannot touch/reach. You will not able to reset connection state.