Wireshark · Wireshark-users: [Wireshark-users] Capture Filter Everything

["Chuck B" <chuckbowling@xxxxxxx>]

I'm new to Wireshark and not all that familiar with network protocols in 
general.

Is it possible to filter everything from a capture session but only the 
things specific to that capture session?

To clarify; I want to study all of the interactions that an app has with 
multiple servers and multiple ports. But, there are a lot of packets mixed 
in with the capture that don't have anything to do with the apps 
interactions.

What I want to do is shut down all unnecessary traffic on my system then 
capture all of the traffic between my ethernet card, router, and ISP. After 
the capture I want to filter everything that has been captured including all 
ARP, DNS, DHCP etc.. However, I don't want to make the filter too generic 
and have it filter things that I want to see.

Once I have a list of all interactions I want to start another capture using 
the filter, open my app, and watch the interactions between it and whatever 
servers it connects to.

Is that possible? And, if so, what is the easiest way to achieve that goal?