AD Server Authentication fail on the USG Flex 500H if domain name start with a number

EmilianoTriacca

ZYXEL usg Flex 500H Firmware V1.21(ABZH.0) | 2024-07-11 06:36:27

i try to join my domain in user authentication / aaa server / ad server summary. Configuration validation check passed with ok but when i try to join AD Domain i can't because my domain name start with a number (!?!?!)

my domain is perfectly working and i never had problems with previous firewall

please help me fix this (obviously i cant modify domain name)

Zyxel_Melen

Hi @EmilianoTriacca,

Since the NetBIOS domain name is different from AD domain name, may I know your NetBIOS domain name is also use the number as begining?

Reference to our user's guide, the NetBIOS domain name is the Zyxel device name for AD server to find it.

Feel free to let me know if you not only use number as begining for your AD domain name and the NetBIOS domain name.

EmilianoTriacca

netbios name is 3h