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Lesson 2
Creating Role-Specific Server Configurations
9-25
create new objects and modify existing ones. You might modify these defaults
to limit
the number of users with permission to modify this container.
Protecting DNS Database Files For DNS zones that are not integrated into
Active
Directory, the zone databases are simple text files stored in the C:\Win-
dows\System32\Dns folder by default. Windows Server 2003 creates DNS debug
logs
in the same folder. The permissions for this folder grant the Administrators
group Full
Control, while the Server Operators group receives all permissions except
Full Control.
The Authenticated Users group receives the permissions needed to read and
execute
files in this folder (see Figure 9-11).
f09pm11
Figure 9-11
The DNS Properties dialog box
You don’t need file system permissions to maintain the DNS zone databases
using the
DNS console or to access DNS server information using a client. Therefore,
there is no
reason for the Authenticated Users group to have file system permissions. By
enabling
users to view the DNS data files, you give them an opportunity to gather
information
about your domain that they could use to stage an attack against the
network. You can
safely revoke the Authenticated Users group’s permissions for this folder,
and even
limit the Server Operators group to read-only access, if desired.
Configuring DHCP Security
The interruption of a DHCP server’s functions might not have an immediate
effect on
your network, but eventually your DHCP clients’ leases will expire and they
will be
unable to obtain new ones. Apart from enabling the DHCP Server service
itself, there
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