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Did the DC have a static or DHCP address? I think having a Static address on the DC would have prevented this since the static DNS address couldn't be replaced.
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Did the DC have a static or DHCP address? I think having a Static address on the DC would have prevented this since the static DNS address couldn't be replaced.

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The DC has a static address. &nbsp;If there is a way to specify in DNS that an address is static, then I don't know of it. &nbsp;I don't think it is possible to specify that in DNS.<br />
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The issue as I see it is this: &nbsp;How do you prevent a machine with an identical name as your server from getting a DHCP address?
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The DC has a static address.  If there is a way to specify in DNS that an address is static, then I don't know of it.  I don't think it is possible to specify that in DNS.

The issue as I see it is this:  How do you prevent a machine with an identical name as your server from getting a DHCP address?

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Here is the scenario:<br />
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Someone brought a laptop in the office (customer), plugs in and gets a DCHP address. &nbsp;It just so happens that the DCHP client (laptop) has the same name as the Domain Controller. &nbsp;DHCP updates the DNS records for the server with the &quot;new&quot; DHCP address.<br />
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I know someone this happened too. &nbsp;How do I prevent this from happening on my network?
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Here is the scenario:

Someone brought a laptop in the office (customer), plugs in and gets a DCHP address.  It just so happens that the DCHP client (laptop) has the same name as the Domain Controller.  DHCP updates the DNS records for the server with the "new" DHCP address.

I know someone this happened too.  How do I prevent this from happening on my network?

DHCP updated Domain Controller DNS record

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

The Dynamic Host Configuration Protocol (DHCP) is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol. DHCP allows for computers to be configured automatically to communicate with each other over an IP network without the need for manual setup by a network administrator. The implementation of DHCP relies on a DHCP server to hand out network configuration information to DHCP-capable clients that request an IP address (and other information required or useful in communicating with other devices on an IP network). In addition to an IP address, common configuration information served over DHCP includes a default gateway, subnet mask and DNS sever(s).

DHCP

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.