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Lesson 2
Monitoring Network Servers
6-21
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Internet e-mail directed to your domain bounces.
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Active Directory directory service clients cannot locate a domain controller
and
therefore cannot log on.
Because your DNS servers might be accessible from the Internet, they are
also more
susceptible than internal services such as DHCP to attacks that can prevent
them from
functioning. It is therefore important that you monitor your DNS servers
regularly.
DNS Logging Unlike most of the network services in Windows Server 2003, DNS
has
its own log in the Event Viewer console (see Figure 6-10). This log can
contain infor-
mational entries about the service’s activities, as well as errors and
warnings concern-
ing dangerous conditions.
F06pm10
Figure 6-10
The DNS Server log in the Event Viewer console
Tip
You can specify what information the DNS service saves to the Event Log by
displaying
the DNS server icon’s Properties dialog box in the DNS console, clicking the
Event Logging
tab, and selecting from the following options: No Events, Errors Only,
Errors And Warnings, or
All Events.
In addition to the Event Viewer log, the Windows Server 2003 DNS Server
service has
debug logging capabilities, which you configure in the Debug Logging tab in
the DNS
server icon’s Properties dialog box, as shown in Figure 6-11. In this dialog
box, you can
specify the types of messages and the amount of detail you want to log. You
can also
create filters to log only the messages to or from specific IP addresses.
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