Netgear fr314 参照ガイド
Reference Guide for the Model FR314, FR318 and FV318 Cable/DSL Firewall and VPN Routers
Troubleshooting
12-5
•
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”
addresses) to numeric IP addresses. Typically, your ISP provides the addresses of one or two
DNS servers for your use. If you entered a DNS address during the router’s configuration,
reboot your PC and verify the DNS address as described in
addresses) to numeric IP addresses. Typically, your ISP provides the addresses of one or two
DNS servers for your use. If you entered a DNS address during the router’s configuration,
reboot your PC and verify the DNS address as described in
.
Alternatively, you can manually configure your PC with DNS addresses, as explained in your
operating system documentation.
operating system documentation.
•
Your PC may not have the router configured as its TCP/IP gateway.
If your PC obtains its information from the router by DHCP, reboot the PC and verify the
gateway (router) address as described in
gateway (router) address as described in
or
.
If some PCs have Internet access but not others, the problem may be one of the following:
•
You may have exceeded the number of PCs supported by your firewall router.
The firewall router provides Internet access for up to eight PCs (20 PCs for FV318). You can
increase this number by purchasing a user-limit upgrade. Refer to
increase this number by purchasing a user-limit upgrade. Refer to
•
Other devices on your network may have used up your user limit.
If you have devices on your network that do not need Internet access, such as print servers or
file servers, you should exclude them from counting toward your user node license. Refer to
file servers, you should exclude them from counting toward your user node license. Refer to
.
If your Internet access works, but your PC or router is unable to send mail through your ISP, the
problem may be one of the following:
problem may be one of the following:
•
If you have enabled Stealth Mode on your router, you may need to allow your router to
respond to ‘identd’ authentication messages from your ISP’s mail server. Refer to
respond to ‘identd’ authentication messages from your ISP’s mail server. Refer to
.
Troubleshooting a TCP/IP Network Using a Ping Utility
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. The ping utility (available
in the Web Management Interface’s Diagnostics window or from your operating system) makes it
easy to troubleshoot any TCP/IP network problems.
to the designated device. The device then responds with an echo reply. The ping utility (available
in the Web Management Interface’s Diagnostics window or from your operating system) makes it
easy to troubleshoot any TCP/IP network problems.