Connectivity
To use ExpeDat for transferring files between computers, the computers must be connected by an Internet Protocol (IP) network path. That is, each computer must have a unique IP address and be reachable by the others. If there are firewalls, VPNs, or NAT devices between the computers, then these devices must be configured to allow traffic on UDP/IP port 8080. You can also configure ExpeDat to use any other UDP/IP port number, if that is more convenient. Should you experience difficulty with a network device, consult the Troubleshooting chapter, contact the device manufacturer, or contact DEI.
For example, in Windows XP you may see a dialog box similar to the following after the first time you run each of the ExpeDat applications. You must click "Unblock" for the software to function correctly.