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2. From the [ATM VC:] drop-down list, select the name
of the ATM interface currently defined on your system.
3. Click [Submit].
The diagnostics utility will run a series of test to check whether
the device's connections are up and working. This takes only
a few seconds and the results for each test are displayed on
screen. A test may be skipped if the program determines that
no suitable interface is configured on which to run the test.
You can click [Help] to display an explanation of each test.
Work with your ISP to interpret the results of the diagnostic tests.
Modifying Port Settings
Overview of IP port numbers
The header information in an IP data packet specifies a
destination port number. Routers use the port number along
with the specified IP addresses to forward the packet to its
intended recipient.
For example, all IP data packets that the ADSL Barricade
receives from the Internet specify the same IP address (your
public IP address) as the destination. However, depending on the
port number contained in the data packets, the ADSL Barricade
may pass the packet on to its embedded Web or Telnet servers,
or to another computer on the network.
The Internet community has developed a list of common server
types such as HTTP, Telnet, e-mail, and many others, and has
assigned a unique port number to each. These are not mandatory,
but are useful in promoting communication between separately
administered LANs.