Dynamic DNS, is it necessary?

[OverDrive]

Why would I ever need it?

For what implication would it be necessary?

My network I am about to set up is 2 DC from 2 seperate remote sites and a VPN connecting the 2 DC's... would I need Dyanmic DNS in this situation?

Thanks!
Chance~

 

[rwullems]

Sorry to tell, but you really need to read a little more on Dynamic DNS in relation to a windows 2000/2003 network.

You do need it unless you want to create manualy records in DNS for al your workstations
regards,
Robert

 

[OverDrive]

Ah!

Well the funny thing is, I have set up the DC and never touched the Dynamic DNS issue... when I look at the DNS settings it says that Dynamic DNS is uchecked... by default! I am able to resolve netbios and all resolution still so that is why I posted the question?

Thanks for the info!
Chance~

 

[rwullems]

Are you running your domain in mixed mode? in this mode netbios is stil available for name resolution. If you run a windwos 2000/2003 domain in native mode, netbios is disabled and the primary name resolution will be handeld by DNS.

In the simpelest way, when a workstations is booting up, it will get an IP adress from the DHCP server, this windows 2000/3 DHCP server will create the reverse lookup entry for the workstation in DNS. The workstation itself will create a formard lookup zone DNS entry in the DNS.

The folowing link gives an good exammple:

http://www.microsoft.com/windows200.../techinfo/reskit/en-us/cnet/cncb_dhc_dgvm.asp

regards,
Robert

 

[OverDrive]

Right... I am with ya there. I am running in the default mode (mixed I am sure).

So why the need for "Dynamic DNS" then...

I guess my real question is... when I set up DNS initially is it automatically set to Dynamic DNS or is that something I have to set up?

Thanks for the help
chance~

 

[rwullems]

From the windows 2003 help file; just folow it on your machine and check what the current setting is:

To allow dynamic updates
Using the Windows interface

Open DNS.
In the console tree, right-click the applicable zone, and then click Properties.
On the General tab, verify that the zone type is either Primary or Active Directory–integrated.
In Dynamic Updates, click Nonsecure and secure.
Notes

To perform this procedure, you must be a member of the Administrators group on the local computer, or you must have been delegated the appropriate authority. If the computer is joined to a domain, members of the Domain Admins group might be able to perform this procedure. As a security best practice, consider using Run as to perform this procedure.
To open DNS, click Start, click Control Panel, double-click Administrative Tools, and then double-click DNS.
Dynamic update is an RFC-compliant extension to the DNS standard. The DNS update process is defined in RFC 2136, "Dynamic Updates in the Domain Name System (DNS UPDATES)."

 

[OverDrive]

I SUPER thank you for the information, but I guess my core question is...

Why do I need it? I read the MS article you sent, and it really said nothing to the affect of why it is needed and when to use it?

Who knows... it works now so why touch it right?

Thanks man!
Chance~

 

[rwullems]

That is for sure. As long as your domain is in mixed mode, everything is working fine, mostly based on netbios. But if you decide to go to a native mode domain (security?) you NEED DNS for name resolution because Netbios is no longer available.

Whatever, i am stopping with this thread. My advise, if you want to know al about Dynamic DNS and were it is used for, take a course (2153 would be helpfull) or read a book
regards,
Robert

 

[OverDrive]

Well, thanks for the help.

Chance~