Whether UDP can be specified for NAT Server configured for the USG2000 and USG5000 series

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You can configure the UDP port mapping when configuring NAT Server for the USG2000 and USG5000 series.
The configuration method is the same as that for TCP port mapping.
[USG]nat server protocol udp global 1.1.1.1 10000 inside 2.2.2.2 10000
[USG]disp nat server id : 3 zone : --- interface : --- global-start-addr : 1.1.1.1 global-end-addr : --- inside-start-addr : 2.2.2.2 inside-end-addr : --- global-start-port : 10000(hwcc) global-end-port : --- insideport : 10000(hwcc) globalvpn : public insidevpn : public protocol : udp vrrp : --- no-reverse : no

Other related questions:
Whether the USG2000 and USG5000 series support the NAT based on domain names accessed by intranet users
USG firewalls do not support NAT based on domain names accessed by intranet users. To allow users to access specified websites, you can configure the URL filtering.

Whether the USG2000 and USG5000 support multicast NAT
USG2000 and USG5000 support multicast NAT

Meaning of the NAT on the USG2000 and USG5000
The Network Address Translation (NAT) is an address translation technology. It can convert the address in an IPv4 packet header to another address. Generally, the NAT is used to convert a private IP address in the IPv4 packet header to a public IP address, so that multiple users on the private network can access the Internet using less public IP addresses. Therefore, the NAT technology can address the IPv4 public address shortage issue caused by the expansion of the Internet scale.

Whether the USG2000 series can map ports after the nat server command is executed
USG2000 series cannot map ports after the nat server command is executed.

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

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