If you want to break down protocol traffic, then run ntop - it will run on pfsense if you so desire. You sure an the hell were not going to get a protocol breakdown from your nat session tables
Normally to be honest non standard ports are blocked in a company setup. I can tell you for sure I can not RDP out of my work network. But ntop is what I would suggest if you want to see who is doing what on what protocols, what % of traffic each protocol is using, etc.
You can customize it to show you specific protocols, here I only normally turn it on if troubleshooting something -- but here example output - turned it on a couple of minutes ago
If your really really looking to be able look at your traffic for analysis -- take a look at http://www.colasoft.com/nchronos/
I use to run it on my home network - but when I switch over to full VMs I have not had chance to bring it back online again. Normally this sort of thing costs 10's of thousands of dollars and only setup in enterprise networks. But this is FREE http://www.colasoft....hronos-free.php
, slickest **** since sliced bread if wanting to know what is going on in your network -- and need to check say what happened last thursday at 3:03 am, etc.. You know I think I need to set this up again, And another drive to my n40l, and then set this up on a VM. Hmmm I do believe I have 500GB drive laying around collecting dust