DNS

In Active Directory, DNS (Domain Name System) is essential for locating domain controllers and services like Kerberos and LDAP via SRV and A records, enabling secure and dynamic name resolution (dn.org). AD uses Integrated DNS zones stored in the AD database, providing secure dynamic updates and multi‑master replication across domain controllers (blog.netwrix.com). Without DNS, clients couldn't find or authenticate to DCs, causing login failures and replication issues—making DNS critical for AD’s functionality.

Written by ruycr4ft