?
Solved

DNS does not resolve correctly via VPN

Posted on 2012-03-29
11
Medium Priority
?
555 Views
Last Modified: 2012-03-30
Our customers use VPN to RDP into their respective workstations on occasion to work. We recently discovered that we can't ping or RDP to computer names; however the FQDN for workstations does work.
0
Comment
Question by:MIT-Techs
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 6
  • 4
11 Comments
 
LVL 22

Expert Comment

by:chakko
ID: 37784512
2 options I think will solve this.

Setup WINs
Or make sure that there is a DNS suffix configured in the TCP/IP v4 settings on the users computer.  This will be on the Advanced area at the DNS tab.

Add your domain suffix.  Then when they need to access by name it will use the suffix to form a FQDN for dns resolution.
0
 

Author Comment

by:MIT-Techs
ID: 37784533
WINS is configured on the server, but still unable to ping or connect to anything by name.
0
 
LVL 22

Expert Comment

by:chakko
ID: 37784541
what type of VPN are you using.  the VPN client may not be using WINs or may not be able to use the WINs through the tunnel.  

The DNS suffix should make it work if that is possible to configure.
0
Ransomware Attacks Keeping You Up at Night?

Will your organization be ransomware's next victim?  The good news is that these attacks are predicable and therefore preventable. Learn more about how you can  stop a ransomware attacks before encryption takes place with our Ransomware Prevention Kit!

 
LVL 22

Accepted Solution

by:
chakko earned 2000 total points
ID: 37784545
in the WINs manager can you see the entries for the workstations in there.  Are they registering automatically with WINs?
0
 

Author Comment

by:MIT-Techs
ID: 37784553
Windows PPTP VPN.

It worked for almost a year. We recently decommissioned a domain controller that was the DHCP/DNS server. The new DHCP/DNS server is Server 2008 and everything seems to be configured correct.

DNS is AD integrated BTW and the DHCP is authorized in AD as well.
0
 

Author Comment

by:MIT-Techs
ID: 37784585
How do I get to the WINS manager in server 2008 r2?
0
 
LVL 22

Expert Comment

by:chakko
ID: 37784917
It should be located in the Administrative Tools area

You should also be able to load the mmc console and then add the snapin for it.
0
 
LVL 22

Expert Comment

by:chakko
ID: 37784930
in the DHCP service you may need to specify the WINS server as a scope option
0
 
LVL 22

Expert Comment

by:chakko
ID: 37784975
Also, check in your Routing and Remote Access, Server Properties on the IP tab

look for a checkbox for Broadcast Name resolution and verify it is enabled.
0
 
LVL 79

Expert Comment

by:arnold
ID: 37786637
As part of the pptp configuration on the client, make sure that the LAN dns servers are listed as well as add as other experts pointed out the LAN ad domain into the list.
0
 

Author Closing Comment

by:MIT-Techs
ID: 37787641
I checked the WINS manager and found the service was not working. I removed and re-added the service. All seems to be working now. Thank you for your help!
0

Featured Post

Turn your laptop into a mobile console!

The CV211 Laptop USB Console Adapter provides a direct Laptop-to-Computer connection for fast and easy remote desktop access with no software to install.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you have a multi-homed DNS setup in windows, you can have issues with connectivity to the server that hosts the DNS services (or even member servers of your domain if this same DNS server is a DC). This is because windows registers all of its IPs…
One of the most often confused topics in the area DNS is the idea of GLUE records. Specifically, what they are, when they are needed, when they are provided, and how they are created. First, WHAT IS GLUE? To understand GLUE, you must first under…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

765 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question