Check if IP is in LAN (behind firewalls and routers)

Question

I\'ve been crawling in the web for about 5 hours now and couldn\'t find a solution for my problem:

My company is developing an educational game and I\'m writing an autou

Answer 1

Typically any IPs like 10.x.x.x (Class A) or 192.x.x.x (Class C) can be safely assumed to be inside a private local area network. IP Classications