Information Technology Reference
In-Depth Information
• Add an A record for the host named host1 in zone1 with the IP address 192.168.200.99:
dnscmd server99 /RecordAdd zone1 host1 A 192.168.200.99
Dnscmd.exe has dozens of command options. As you can see, with a little practice, you can
learn its syntax and manage all your DNS zones without a single mouse click.
Configuring DNS Zones
After a zone is created, you can view and change its properties in DNS Manager by right-clicking the
zone and clicking Properties. In the General tab of a zone's Properties dialog box (see Figure 9-10),
you can view and change the following options (some have been discussed previously):
Status —Pause a running DNS zone or start a paused DNS zone. When a zone is paused,
queries made to it are refused.
Type —Change the zone type (primary, secondary, or stub) and choose whether the zone
should be Active Directory integrated.
Replication —Change the replication scope.
Dynamic updates —Choose Secure only, Nonsecure and secure, or None.
Aging —Click this button to configure aging and scavenging options (discussed in the
next section), which specify how often stale resource records are removed from the zone
database.
Figure 9-10
A zone's Properties dialog box
Aging and Scavenging Resource Records
When a resource record is created with DDNS, the record receives a timestamp based on the
server's time and date. When a resource goes offline, it should contact the DNS server to delete
its resource records. Unfortunately, this process doesn't always occur, and records that are no
 
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