Make a hole for the firewall, let you get in touch with the outside world, and feel the charm of the underlying development
1. The principle of gateway and firewall
2. The 4 types of gateway nat
3. The principle of 3 network penetration
The video is explained as follows, click to watch:
Make a hole for the firewall, let you have close contact with the outside world, and feel the charm of the underlying development丨C/C++丨Linux server development丨backend development丨NAT丨P2P丨network penetration