ZyXEL Communications ZyWall USG 50-H Series, User Manual

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Chapter 42 Troubleshooting
ZyWALL USG 50-H User’s Guide
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2
Make sure the WLAN device and the corresponding WLAN interface are enabled on the
ZyWALL.
3
Make sure the wireless adapter on the wireless station is working properly.
4 Make sure the wireless adapter (installed on your computer) is IEEE 802.11 compatible
and supports the same wireless standard as the ZyWALL.
5 Make sure your computer (with a wireless adapter installed) is within the transmission
range of the WLAN device installed in the ZyWALL.
6 Check that both the ZyWALL and your wireless station are using the same wireless and
wireless security settings. If you are using WPA or WPA2, The wireless clients must use
TTLS authentication protocol and PAP inside the TTLS secure tunnel. In some clients
you need to select the TKIP encryption type and TTLS may be listed as the “EAP Type”.
7 Make sure traffic between the WLAN and the LAN is not blocked by the ZyWALL’s
firewall or application patrol configuration.
8 Make sure you allow the ZyWALL to be remotely accessed through the WLAN
interface. Check your remote management settings.
V
I cannot use the cellular (3G) Internet connection.
1
Make sure the SIM card is properly inserted in the cellular device.
2 Make sure the cellular device is properly connected to the correct slot. (The USB port for
which you configured the corresponding cellular interface.) You may need to remove the
cellular device and reconnect it.
3
Make sure the cellular interface is enabled and properly configured on the ZyWALL.
4 Check the cellular interface’s status in the Network > Interface > Cellular > Status .
screen. See Table 55 on page 177 for descriptions of the different statuses.
5 Also check the logs. See Table 248 on page 628 for descriptions of the logs and related
troubleshooting steps.
6 Check your configuration for the cellular interface, especially the PIN code (and the
APN and dial plan if you had to enter them).
7 Make sure your ZyWALL is within the transmission range of the cellular base station.
42.1 Resetting the ZyWALL
If you cannot access the ZyWALL by any method, try restarting it by disconnecting and
reconnecting the power. If you still cannot access the ZyWALL by any method or you forget
the administrator password(s), you can reset the ZyWALL to its factory-default settings. Any
configuration files or shell scripts that you saved on the ZyWALL should still be available
afterwards.
Use the following procedure to reset the ZyWALL to its factory-default settings. This
overwrites the settings in the startup-config.conf file with the settings in the system-
default.conf file.