Netgear FVM318 – Cable and DSL ProSafe Wireless VPN Security Firewall 参照マニュアル

Troubleshooting

8-5

•

Your ISP only allows one Ethernet MAC address to connect to Internet, and may check for 
your PC’s MAC address. In this case:

Inform your ISP that you have bought a new network device, and ask them to use the firewall’s 
MAC address.

OR

Configure your firewall to spoof your PC’s MAC address. This can be done in the Basic 
Settings menu. Refer to 

If your firewall can obtain an IP address, but your PC is unable to load any web pages from the 
Internet:

•

Your PC may not recognize any DNS server addresses. 

A DNS server is a host on the Internet that translates Internet names (such as 
www.netgear.com) to numeric IP addresses. Typically your ISP will provide the addresses of 
one or two DNS servers for your use. If you entered a DNS address during the firewall’s 
configuration, reboot your PC and verify the DNS address as described in 

. Alternatively, you may configure 

your PC manually with DNS addresses, as explained in your operating system documentation.

•

Your PC may not have the firewall configured as its TCP/IP gateway.

If your PC obtains its information from the firewall by DHCP, reboot the PC and verify the 
gateway address as described in 

Most TCP/IP terminal devices and routers contain a ping utility that sends an echo request packet 
to the designated device. The device then responds with an echo reply. Troubleshooting a TCP/IP 
network is made easier by using the ping utility in your PC or workstation.