ZyXEL Communications NXC2500 User Manual page 351

If a RADIUS server authenticates wireless stations, the re-authentication timer on the RADIUS
server has priority. Change the RADIUS server's configuration if you need to use a different re-
authentication timer setting.
The NXC is not applying an interface's configured ingress bandwidth limit.
At the time of writing, the NXC does not support ingress bandwidth management.
The NXC routes and applies SNAT for traffic from some interfaces but not from others.
The NXC automatically uses SNAT for traffic it routes from internal interfaces to external interfaces.
For example LAN to WAN traffic. You must manually configure a policy route to add routing and
SNAT settings for an interface with the Interface Type set to General. You can also configure a
policy route to override the default routing and SNAT behavior for an interface with the Interface
Type set to Internal or External.
The NXC keeps resetting the connection.
If an alternate gateway on the LAN has an IP address in the same subnet as the NXC's LAN IP
address, return traffic may not go through the NXC. This is called an asymmetrical or "triangle"
route. This causes the NXC to reset the connection, as the connection has not been acknowledged.
I changed the LAN IP address and can no longer access the Internet.
The NXC automatically updates address objects based on an interface's IP address, subnet, or
gateway if the interface's IP address settings change. However, you need to manually edit any
address objects for your LAN that are not based on the interface.
I cannot get the RADIUS server to authenticate the NXC's default admin account.
The default admin account is always authenticated locally, regardless of the authentication method
setting.
The NXC fails to authentication the ext-user user accounts I configured.
NXC2500 User's Guide
Chapter 31 Troubleshooting
351