Why can only private lines access the external network?

Private line is a network line with independent IP provided by operators or IT communication service providers to enterprises, which is usually called enterprise private line. Access to the external network is a compliant way, but the network that usually accesses the Internet cannot access the external network.

Enterprise private line refers to a network connection service specially provided for enterprises. Through this service, enterprises can establish high-speed, stable and secure network connections, connect various departments and branches within enterprises, and also connect networks between enterprises and Internet and cloud service providers.

It can provide a variety of connection methods, such as optical fiber, Ethernet and so on. , and can also provide high-quality service guarantee, such as bandwidth guarantee, QoS guarantee, security guarantee, etc. Compared with the public Internet, enterprise private line has higher reliability, lower delay and higher bandwidth, and can provide more stable and efficient network connection services for enterprises, which is one of the important infrastructures for enterprises to realize digital transformation and cloud computing applications.