Secondary dns zone not updating Sex chat with female robot
Using a Microsoft DHCP server to facilitate these updates can help to mitigate this issue, as well as providing a consistent method for updating DHCP client records.
DHCP gives us a way to provide consistent DNS security to all of our client records.
If the DHCP clients are updating their own records they follow the 24 hour standard interval (You may find contradiction for this in some articles, see the network capture below taken on an XP machine, validated on 2003-Win 7).
Contrary to many articles (including those by Microsoft) that state that the Netlogon service that runs on Domain Controllers updates records every hour, this update actually takes place every 24 hours – up until Windows 2008.
It does this by trimming the fat from the DNS database.
If you do not yet have scavenging enabled on you DNS zones I would suggest planning and enacting that change before streamlining your DNS zones.
Thus, for those clients that cannot update their records, DHCP can update DNS for them.
There are some fringe benefits to having DHCP update our records in DNS.
– The scavenging service (done at the server level in the DNS management console) should only be done for one server that owns the DNS zone to avoid premature removal from the DNS database. Be aware of how your services, that use DNS, update their records in the database.
This is best accomplished when other best practices have been followed in the network configuration.
These include but are not limited to: – Active Directory Intergraded DNS Zones – Whenever possible, intergrating your DNS into AD is very helpful to the stability of your DNS design.
If you have not changed the DHCP lease times, it is wise to leave the DNS Refresh and No-Refresh intervals to the default 7 days each.
An ongoing security concern in the technical field is DNS.