Why am I unable to access device web GUI after applying customer’s configure file

Zyxel_Cooldia

Question

After applying configuring file, I am unable to access device web GUI from wan side.

Anything I can check on startup configure file?

Answer

Please check the following items in configure file
1) Web GUI port.

Make sure the web GUI access port is correct

ip http port 888
ip http secure-port 4433

2) Admin service control, confirming the zone access action is accepted or not.

ip http secure-server table admin rule 1 access-group xxx zone ALL action accept
ip http server table admin rule 1 access-group xxx zone ALL action accept

3)Security policy
Confirming it has security policy from WAN to ZyWALL, and the service port/group with Web GUI access port.
!
from WAN
to ZyWALL
service Default_Allow_WAN_To_ZyWALL
log
action allow
!