Ownership and auditing
Overview
Configure DNS to prepare for Domain Controller
installation
Checking configuration
Running DCPROMO.EXE
Why?
Why is DNS so important?
Computer need to find domain controllers when they
boot and
Users need to find domain controllers when they want to
log on.
Domain controllers need to find other domain controllers
for replication.
HOW??? Through SRV records in DNS
Start with…
First Domain controller
in the First Domain or Root Domain
This is called the root domain of a forest.
The name you choose for this domain will be inherited
by all other sub-domains.
Step 1 : preparing DNS on the 1ste DC in a new root
domain
Install DNS service.
Configure TCP IP settings on the member server.
Preferred dns setting = your own ip address.
Create a new Forward lookup zone: e.g.
sales.hq.com
sales.local
mycompany.edu
Make sure that the zone file supports :
DYNAMIC UPDATES
Change the “primary dns suffix” (properties: my
computer)
Checkup dynamic update
At this point it is best to check if dynamic update is
working correctly.
How?
Ipconfig / registerdns
ipconfig /flushdns
ipconfig /displaydns
Support tools : dcdiag.exe or netdiag.exe
Step 2: running dcpromo
Start > run
DCPROMO.EXE
Watch out for
 Dns name you choose (has to be the same as what you
prepared in DNS)
 Recovery password.
 Sysvol share
Reboot
Step 3 : check registration
During the first boot after installation,
the domain controller needs to register its SRV records
on the DNS server.
This can sometimes take a long time.
You can speed it up and check it at the same time by
restarting the DNS service and by checking the DNS
zone file.
Compare: before DCPROMO
after DCPROMO:
Check again
Before you add new domain controllers or new domains,
check:
 Dns
 Zone file
 Dcdiag
Now you can continue to build extra domains into your
forest
Step 4: adding clients to the domain
Set the preferred dns setting to point to your dns server.
Check dynamic updates
Add the computer to the domain.
Uninstalling AD
You run DCPROMO.EXE and demote the server back to
member server.
AD and DNS integration.
If you want to replicate zone file information,
 you can use primary and secundary dns zones
 Disadvantage : not flexible to configure, not adapted to
network topology, uses more bandwith, no scheduling
Or you can put the zone files IN the AD database. Each
time that AD replicates with other DNS servers and
Domain controllers, zone files are also replicated.
 Advantage : you can schedule replication, configure
protocols used for replication…
How to integrate DNS zone in AD?
Properties of a dns zone:
Choose AD integrated.
You don’t notice any changes in the dns interface.