I need to monitor that an application is active on a Windows 7 machine. The application listens on port 80. If the application is up, the Windows machine will show it is listening on port 80. A netstat -ano would be good to show that the application is active. I am using the universal forwarder. Can you give me an idea of what I can use to verify the application is active and listening on port 80?
You could deploy a script to your UF that periodically runs things like the netstat command you mentioned. Splunk will index the output and you can search/alert/report from there. I'm sure you can also get a list of running processes/services as well.
To make sure you don't reinvent the wheel you should check if https://splunkbase.splunk.com/app/1680/ has a similar thing already built.