Mastering Active Directory - Second Edition

SRV records

SRV records are used to specify the location of a service inside an infrastructure. For example, if you have a web server in the infrastructure, by using an SRV record, you can specify the protocol, service, and domain name and then define the service location. In an AD environment, SRV records are important as they help to locate the nearest domain controllers. In the previous chapters, I explained AD sites: when a user logs in, the system needs to point the user to the site's local domain controller instead of the domain controller in the hub. This is done via SRV records.

In an SRV record, the following information can be specified:

• Service: This will define the service that belongs to the SRV record.
• Protocol: This will define ...