external dns of a server

Where would I look to see if a server on our network has an external DNS.  

If it does have an external DNS, how could I tell if it is restricted to only certain IP ranges?

Windows 2003 Server

Thanks
snyperjAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

it_saigeDeveloperCommented:
By external DNS, do you mean that the server itself looks at an external DNS source (via the Network Card Settings for Primary and Alternate DNS servers) or that the server is providing DNS externally?

-saige-
Seth SimmonsSr. Systems AdministratorCommented:
Where would I look to see if a server on our network has an external DNS.  

you can run ipconfig /all and you will see the DNS servers it is configured to use
or look at the TCP/IP properties of the interface; click on the advanced button and the DNS tab

If it does have an external DNS, how could I tell if it is restricted to only certain IP ranges?

if you can ping the server but queries to it fail, it's possible
though if it is using something like google or your ISP there shouldn't be a restriction for queries
snyperjAuthor Commented:
I should have been more specific, what I am trying to determine is if the server can be reached from outside of our network.  I believe it can be, but I am having trouble finding the info I need to be able to connect to it externally.
IT Pros Agree: AI and Machine Learning Key

We’d all like to think our company’s data is well protected, but when you ask IT professionals they admit the data probably is not as safe as it could be.

it_saigeDeveloperCommented:
If you believe that your server is publishing DNS externally then look for outbound traffic over port 53.  To see if your firewall is indeed publishing 53, you can use Shields Up at grc.com in order to do a scan of the ports.

-saige-

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
HaroldNetwork EngineerCommented:
I should have been more specific, what I am trying to determine is if the server can be reached from outside of our network.  I believe it can be, but I am having trouble finding the info I need to be able to connect to it externally.

If Remote Access is enabled and your server and port forwarding(NAT) the public IP to the private(assuming your IP is private on server), then you could access via RDP session. Default port for RDP is 3389, unless you change this, which is a good idea for security.

Or you could use something like team viewer to access.
snyperjAuthor Commented:
Thanks- this is what I did
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Server 2003

From novice to tech pro — start learning today.