Intel 1520 User Manual

Chapter 4 Configuring the Appliance

Configuring DNS

The DNS Configuration section lets you configure DNS services. The following
table describes the options.

Using the Snapshots page

The Snapshots page lets you take snapshots of the selected appliance’s
configurations or lets you restore previously saved configurations. A
configuration snapshot consists of a complete set of appliance configuration files.

Note

It is a good idea to take a snapshot before doing system maintenance or
attempting to tune system performance. Taking a snapshot only takes a few
seconds and it can save you hours of correcting configuration mistakes.

Option

Description

Resolve
attempt
timeout

Specifies how long the appliance must wait for the DNS server
to respond with an IP address, even if the client request has
been cancelled. You can choose from the following:

❚

5 seconds

❚

10 seconds

❚

15 seconds

❚

20 seconds

❚

30 seconds

If the user abandons the request before this timeout expires,
the appliance can still obtain the host’s IP address in order to
cache it. The next time a user makes the same request, the
address will be in the cache.

Number of
retries

Specifies how many times the appliance should allow a lookup
to fail before it abandons the lookup and sends an

invalid

hostname

message to the user. You can choose from the

following:

❚