Expand the Forward Lookup Zones folder. If your domain is named policy. Enter the logon name for the user in the User Logon Name field, and select the domain to which the account should be associated with. In the DNS dynamic updates registration credentials section of the Advanced tab, click the Credentials button. Proceed to set the password of the user in the Password and Confirm Password fields, and enable any applicable options available in the dialog box for the new user account. The preferred DNS server returns the resolved query to the original client that sent the query for name resolution. With the entries for domain controllers being so sensitive to the security and stability of Active Directory, having such relaxed entries for these entries is not in the best security interest of your organization. Regardless of the attack on your DNS infrastructure, you need to take precautions to thwart off these attacks before it is too late. The primary DNS server notifies its secondary servers of a change. If you do have DHCP installed on your domain controllers, it is a best practice to not have these DHCP servers perform the dynamic updates for the clients. This form of update eliminates the need for manual entries of names and IP addresses into the DNS database, which was the old method. Enter the cache time-out TTL value in the Cache time-out field.
With these dynamic updates, you can have the client perform them on their own behalf, or have DHCP do it. Select the WINS tab. Some attacks can be to gather information from your database, only to use that information against you as they build a structure of what your network looks like. Click the DNS tab. Click the Advanced button. Expand the DHCP server node in the console tree. Enter the lookup time-out TTL value in the Lookup time-out field. This is the user's display name. In the next article, I will go over some of the detailed settings that you can make in DNS to help protect and secure the DNS database and service for your network. Settings you make at the member level apply to all networks and zones configured on that member. Expand the Forward Lookup Zones folder. Even though DNS is a simple database of names and numbers, an attacker can take full advantage of the information that they can glean from compromising the database. Enter the cache time-out TTL value in the Cache time-out field. As the name indicates, DNS stores domain related information. Provide what is needed to create an FQDN: However, there are settings that will allow a more secure and stable DNS environment. This means that only computers that have joined the Active Directory domain can dynamically update the DNS database. DNS database can be Active Directory integrated It is highly recommended that you configure your DNS servers to be Active Directory integrated when they are supporting Windows Active Directory, due to the security benefits that you get. The entries that would be exposed include all of the SRV Service Resource Records that control how clients and servers find Active Directory related services within the network. Click Next, and then click Finish. The secondary servers confirm the need for a zone transfer, and the primary server sends the updated zone data to the secondary server, completing the update. You also get some redundancy and stability benefits from this type of DNS database, but here, we want to focus on the security aspects. This form of update eliminates the need for manual entries of names and IP addresses into the DNS database, which was the old method. DNS can also be configured with a reverse lookup zone, which will return names when given an IP address. The options that you can configure on the Advanced dialog box are Cache time-out and Lookup time-out intervals. The key here is to understand which names we are talking about.
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