First, different IP distributions.

1. Internal network: Internal network IP assigns the IP address of each router used internally, and all users of the internal network use the same external network IP address.

2. External network: Raider, the operator of external network IP allocation, is the only IP address in the world, and only network equipment is assigned to it.

Second, the scope is different.

1, internal network: LAN internal network, generally covering several kilometers.

2. External network: The external network is a wide area network, usually in a large physical scope, covering from tens of kilometers to thousands of kilometers. It can connect many regions, cities and countries, as well as all continents in the world, providing long-distance communication and forming an international long-distance network.

Third, different network security.

1, Intranet: Intranet has high security and can effectively protect data security.

2. External network: The external network has low security and is easy to be attacked by other malicious networks, revealing private information.

Extended data:

High-speed LAN connection is a feature that distinguishes campus network from external network. The general campus network can enter the external network, but the external network cannot or limits the access to the campus network.

The information structure of campus network is more diversified. Campus network is divided into three parts: electronic teaching (multimedia classroom, electronic library, etc.). ), office management and telecommunications (distance education, Internet access, FTP services, online games, etc. ).

Different types of data have different requirements for network transmission quality.