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.

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