Troubleshooting

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Troubleshooting TCP/IP failures

Windows DEP (Data Execution Prevention)

Can block programs that try to do 'non-standard' network communications, and sending and receiving HL7 messages over TCP/IP is certainly something that's not 'Normal' on most computers in the world. The problem actually lies in the fact that we are using the same types of communications which are continually being exploited by "hackers" to do malicious things to computer networks. So you may find it necessary to "Enable" the applications in DEP if you're computer/server is running MS WIndows XP SP2 or MS Windows Server 2003 or greater.

To get to the DEP settings:

•	Right-click on 'My Computer' in windows explorer and select 'Properties' from the pop-up menu

•	Click the 'Advanced' Tab

•	In the 'Performance' section click the 'Settings' button

•	In the 'Performance Options' window click the 'Data Execution Prevention' tab.

•	Make the necessary changes. This usually consists of "Adding" the Commando HL7 Workbench (EHL7_Commando.exe) as an "exception" or turning DEP off altogether.

Windows and Hardware Firewalls

Verify that all ports used in your listener and router profiles are 'Open' and allowed to pass through any hardware or software firewalls that exist between the computer running Commando and the computer you are sending to or receiving from. NOTE: Even if it's all on one computer, the Windows firewall can still block the ports.