creating a record in DNS 2

[frankygee]

Hi,
I currently manage a SBS2003 server (inherited).
the local domain is abc.com (hence the problems below).

I created an A record to allow the users in this domain to access their website

http://www.abc.com

www Host(A) IP Address
which worked fine.

However the developers setup a subdomain for an interactive part of the site 123.abc.com.
How do i create a record to allow access to the subdomain.
have tried using an alias record but only reach the server not the subdomain.
The site is fully accessible from outside the network.

Thanks.

 

[WhoKilledKenny]

Just add a new domain to your parent domain in DSN. From DNS MMC go to your forward lookup Zones. On ABC.COM folder, right-click, choose "New Domain," name the new domain 123.

 

[ShackDaddy]

Actually, name the new zone "123.abc.com" or whatever your equivalent is.

ShackDaddy
Shackelford Consulting

 

[WhoKilledKenny]

Actually, we are talking two different things here. Shack is talking about creating a New Zone called 123.abc.com. I was talking about creating a subdomain under the Zone abc.com.

I didn't want you to create a new domain and name it 123.abc.com as the namespace, for domain setting, would actually come out as 123.abc.com.abc.com.

Domain name servers store information about part of the domain name space called a zone. The name server is authoritative for a particular zone. A single name server can be authoritative for many zones.

Understanding the difference between a zone and a domain is sometimes confusing. A zone is simply a portion of a domain. For example, the Domain Microsoft.com may contain all of the data for Microsoft.com, Marketing.microsoft.com and Development.microsoft.com. However, the zone Microsoft.com contains only information for Microsoft.com and references to the authoritative name servers for the subdomains.

The zone Microsoft.com can contain the data for subdomains of Microsoft.com if they have not been delegated to another server. For example, Marketing.microsoft.com may manage its own delegated zone. Development.microsoft.com may be managed by the parent, Microsoft.com.

If there are no subdomains, then the zone and domain are essentially the same. In this case the zone contains all data for the domain.

 

[ShackDaddy]

My bad. Two ways to go about setting up the same functionality, and going the new zone route probably isn't the best. Thanks for the clarification.

ShackDaddy
Shackelford Consulting

 

[WhoKilledKenny]

There really is no right or wrong way from what I gather.

If there are no subdomains, then the zone and domain are essentially the same. In this case the zone contains all data for the domain.

Just wanted the poster to understand that we were talking about two different concepts.
The only con I see will adding it as a domain would be, what if you wanted to add an AD subdomain 123 and it already exists in DNS?

 

[frankygee]

Cheers for the speedy response.

I created a domain (123) under the abc.com folder but cannot see the site.

I also tried creating an A record in the domain but it didn't make a difference. still get a page cannot be found for the required sub domain.

 

[ShackDaddy]

Did you create the A record inside the 123 domain container?

Then, on both the client and the server, do this at the command-line: ipconfig /flushdns

Otherwise the cached negatives from previous attempts will be redelivered to you.

ShackDaddy
Shackelford Consulting

 

[frankygee]

Yes, created an A record with Host same as parent (123.abd.com) and the ip of the server hosting the website. Flushed the cache.

Am now getting a holding page for the site instead of the correct web page. (page is available outside of their network). Looks like were getting there but not crossed the finish line.
Thanks again for the help.

 

[ShackDaddy]

I'm not sure. Could be that they set up 123.abc.com with a referal to another URL inside a frameset or something, and you can't resolve another name. Play with it more with an outside client or talk to the developers and see if there's any funny business, or if the whole site is hosted at that FQDN (

http://123.abc.com).

Ask them if they are using host-headers, and if they are, what are they. Sounds to me like you're just missing information, since you've got the DNS set up right with what you know.

ShackDaddy
Shackelford Consulting

 

[frankygee]

Although I understand the basics of DNS I don't have an indepth knowledge, so this question may be a bit naive. But if the top level servers can resolve the url, should I not be able to configure my windows DNS server to do the same.

 

[ShackDaddy]

You are right, you can set up all the same records. My last point was that you may not have all the information you need if the developers are actually using an additional name that you don't know about. I'm just saying that you might be able to resolve this by talking to the developers about 123's architecture.

ShackDaddy
Shackelford Consulting

 

[frankygee]

Will contact them.....and brush up on my DNS.

Thanks again for the help.