Filtering using port+process (i.e. open port 80 for Apache only)

["Moath A. Khalaf" <moath2@xxxxxxxxx>]

Hi,

How can I filter using a port and allow some processes
to 
pass this filter. For example, I want to add a rule
that 
does not accept a connection on port 80 to any process

other than Apache web server.

Regards

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