Application name which trying to access particular port

[enggwaqas]

I have downloaded a simple port blocker written in vb.net which is working fine, now i want to extend it so that it will display a popup window whenever any application trying to access the particular port blocked by this program...

e.g. port 8080 is blocked, when some one try to make request on internet explorer http://testweb:8080/ then it will display a popup which say's IE is trying to access the internet.... Zone Alram is a good example what i want..

Can any one help me regarding how to do this in .net?

[Plater]

Is the port blocker you downloaded just opening up connections on the ports so that others cannot use them?

Regardless, there are probably some sneaky socket options that you can use to block/notify. Or possibly even WMI.