ZyXEL Communications 35 User Manual

ZyWALL 35 Internet Security Appliance 

 

17 

4 Troubleshooting 

None of the 
LEDs turn on 
when you turn 
on the ZyWALL. 

Make sure that you have the power adaptor connected to the ZyWALL and plugged in to an 
appropriate power source. Check all cable connections. 

If the LEDs still do not turn on, you may have a hardware problem. In this case, you should contact 
your local vendor. 

Cannot access 
the ZyWALL 
from the LAN. 

Check the cable connection between the ZyWALL and your computer or hub. Refer to the section on 
front panel for details.  

Ping the ZyWALL from a LAN computer. Make sure your computer’s Ethernet card is installed and 
functioning properly. 

Cannot ping any 
computer on the 
LAN. 

If the 10/100M LAN/DMZ LEDs are off, check the cable connections between the ZyWALL and your 
LAN computers. 

Verify that the IP address and subnet mask of the ZyWALL and the LAN computers are in the same 
IP address range. 

The WAN IP is provided after the ISP verifies the MAC address, host name or user ID. 

Find out the verification method used by your ISP and configure the corresponding fields. 

If the ISP checks the WAN MAC address, you should clone the MAC address from a LAN computer. 
Click WAN and then the WAN1 or WAN2 tab, select Spoof WAN MAC Address and enter the IP 
address of the computer on the LAN whose MAC address you are cloning.  

If the ISP checks the host name, enter your computer’s name in the System Name field in the 
MAINTENANCE General screen (refer to the Maintenance part in the User’s Guide).  

Cannot get a 
WAN IP address 
from the ISP. 

If the ISP checks the user ID, click WAN and then the WAN1 or WAN2 tab. Check your service type, 
user name, and password. 

Check the ZyWALL’s connection to the cable/DSL device. 

Cannot access 
the Internet. 

Click WAN to verify your settings.