NETGEAR STM150EW-100NAS, UTM5EW-100NAS Troubleshoot a TCP/IP Network Using a Ping Utility, 543

ProSecure Unified Threat Management (UTM) Appliance

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

•Your computer might 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 provides the addresses of one or two DNS servers for your use. You can configure your computer manually with DNS addresses, as explained in your operating system documentation.

•Your computer might not have the UTM configured as its TCP/IP gateway.

Troubleshoot a TCP/IP Network Using a Ping Utility

•Test the LAN Path to Your UTM

•Test the Path from Your Computer to a Remote Device

Most TCP/IP terminal devices and firewalls contain a ping utility that sends an echo request packet to the designated device. The device then responds with an echo reply. You can easily troubleshoot a TCP/IP network by using the ping utility in your computer or workstation.

Test the LAN Path to Your UTM

You can ping the UTM from your computer to verify that the LAN path to the UTM is set up correctly.

To ping the UTM from a computer running Windows 95 or later:

1.From the Windows toolbar, click Start and select Run.

2.In the field provided, type ping followed by the IP address of the UTM, for example:

ping 192.168.1.1

3.Click OK. A message similar to the following should display:

Pinging <IP address> with 32 bytes of data

If the path is working, you see this message:

Reply from <IP address>: bytes=32 time=NN ms TTL=xxx

If the path is not working, you see this message:

Request timed out

If the path is not functioning correctly, you could have one of the following problems:

•Wrong physical connections:

-Make sure that the LAN port LED is on. If the LED is off, follow the instructions in LAN or WAN Port LEDs Not On on page 540.

Troubleshoot and Use Online Support

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