NAT classification on the USG9000 series

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There are three types of NAT: source NAT, server mapping, and destination NAT.

Other related questions:
NAT on the USG9000 series
NAT is a type of address translation technology that converts the address in an IPv4 packet header into another address. Generally, the NAT technology is used to convert private addresses in IPv4 packet headers into public addresses so that users on the private network can access the Internet concurrently by using a few public addresses. The NAT technology is usually used to address the issue of public IPv4 address shortage caused by the constant increase in the Internet scale.

Source NAT on the USG9000 series
Source NAT involves converting the source address in packets. Source NAT is implemented in different ways in different scenarios.

NAT classification on the USG2000 and USG5000
Based on application scenarios, the NAT can be categorized as source NAT, server mapping, and destination NAT.

Destination NAT on the USG9000 series
Destination NAT applies to the scenario in which mobile phone users need to change the destination gateway address.

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