I have a windows server 2008 machine which has qlikview application installed and this application has stopped working from last week, the application services were stopped. I'm unable to start the services(services are configured with the local account). As part of troubleshooting, I checked netstat to verify if the application ports are opened. I could not see on the list a couple of application related ports( eg. 4799, 4750). How do I verify if the ports are open or blocked on the server?
Windows – how to check if a port is blocked on a windows server
networkingwindows
Related Solutions
I've had success with Sysinternals Process Explorer. With this, you can search to find what process(es) have a file open, and you can use it to close the handle(s) if you want. Of course, it is safer to close the whole process. Exercise caution and judgement.
To find a specific file, use the menu option Find->Find Handle or DLL... Type in part of the path to the file. The list of processes will appear below.
If you prefer command line, Sysinternals suite includes command line tool Handle, that lists open handles.
Examples
c:\Program Files\SysinternalsSuite>handle.exe |findstr /i "e:\"(finds all files opened from drivee:\"c:\Program Files\SysinternalsSuite>handle.exe |findstr /i "file-or-path-in-question"
Best Answer
Hope this helps 9originally from elsewhere but fits your situation)
Assuming that it's a TCP (rather than UDP) port that you're trying to use:
1.On the server itself, use netstat -an to check to see which ports are listening
2.From outside, just telnet host port (or telnet host:port on Unix systems) to see if the connection is refused, accepted, or timeouts
On that latter test, then in general: