Move to 6004 build before you proceed to
this.
If the central server is using NAT, do the following steps,
1. Stop central. Open conf/serverparameters.conf and change the
NAT_NAME and NAT_PORT as follows

2.Open the following ports for the central server
3.
Download
this zip- Extract this under central server home directory.
4.Restart the server.
Note:
Check the directory name
RemoteControl under probe server home. If the directory exists rename it as RemoteControlOld.