Is there an Android app like a Firewall that can monitor when other apps access the Internet?

[Bansaw]

There are certain apps on my phone that I'd like to monitor.
I'd like to know when it is accessing the internet, and maybe even block it.
I had Comodo Firewall for my laptop, but am wondering if there is an Android app that will help me do this?
Doesn't have ti be a 'firewall' but just something to help me monitor this app's Internet access.

 

[Rukbat]

Go to the Play store and search firewall. There are a LOT of them. (Comodo is one of them.)