How can someone hack my PC if I am connecting to the internet through NAT?
Private IP addresses (172., 192. etc.) are not routable addresses, and not visible to the outside world due to NATing.
Even if some incoming traffic for these private IPs does hit a border router, I guess most commercial routers would be configured to not route the traffic.
So, does this, in any way, imply that my system, being on a private IP (172.) inside my University network, is safe from attacks from outside?
I agree that inside attacks can very well occur, but what about any adversary wanting to target me from outside?