Method used to import the license file on USG firewalls

On the USG2000, USG5000, and USG6000, you need to import the license file (.dat file) to the root directory of the storage device.
Generally, you can import the file in FTP mode. For example, when a USG firewall functions as an FTP server, import the license file as follows:

[USG] ftp server enable //Enable the FTP function on the firewall.
[USG] aaa
[USG-aaa] local-user admin password irreversible-cipher Admin@123
//On the FTP server, configure the FTP user authorization mode, priority, and authorization directory.
[USG-aaa] local-user admin service-type ftp
[USG-aaa] local-user admin level 3
[USG-aaa] local-user admin ftp-directory flash:
[USG-aaa] quit
[USG] interface GigabitEthernet 0/0/1
[USG-GigabitEthernet0/0/1] ip address
//Configure the IP address of the FTP server.
[USG-GigabitEthernet0/0/1] quit

On the PC, perform the following operations:
C:\Documents and Settings\user> ftp //Connect to the server.
Trying ...
Press CTRL+K to abort
Connected to
220 FTP service ready.
331 Password required for admin.
Password: //Enter the password.
230 User logged in.
ftp> binary
200 Type set to I.
ftp> put xx.dat //Upload the license file.

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