Hmmm... Well, if it's not your 'official' job, and you're not being contracted to do a security analysis / pentest / ethical hack, then to be honest, you're asking the wrong folks for help.
We deal with ethics here. It's not considered 'ethical' to just randomly decide to 'monitor what's going on', on someone else's network, when you've not been hired or given permission to be doing so.
Learning on your own network is one thing. Learning / practicing or even exercising your own 'curiosity,' on someone else's, is another. Without proper authority and permission, you're asking for a ticket to jail.
~ hayabusa ~
"All men can see these tactics whereby I conquer,
but what none can see is the strategy out of which victory is evolved."
- Sun Tzu, 'The Art of War'
OSCE, OSCP (Former - GPEN, C|EH - both expiring / expired)