Solved

DNS not working on VPN Connections

Posted on 2014-09-09
2
178 Views
Last Modified: 2014-09-22
Recently it appears like DNS has stopped working when I connect to our network using a Cisco VPN Client.  In the past I would connect using our software client and once connected, I could use remote desktop to connect to a workstation or server by the workstation or server name.  

There have not been any changes to our DC's or DNS servers.  I have rebooted the servers and that hasn't resolved the issue.

I remotely connect if I use the IP address, but a server name returns a error that indicates that remote connections are not enabled or the server is offline, which can't be the case because I can connect using IP.
0
Comment
Question by:sfletcher1959
[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
2 Comments
 
LVL 6

Expert Comment

by:Steve Whitcher
ID: 40312001
When connected to the VPN, run an "ipconfig /all" and double check that the VPN connection has the right dns servers listed.
0
 
LVL 16

Accepted Solution

by:
max_the_king earned 500 total points
ID: 40312051
Hi,
it is a known problem, operating system dependent: it started from windows 7 (there was no problem with xp). Your ASA, as long as you can reach the IP address, is fine. So is your vpn client.
The problem is that for some funny reason, windows operating system will pick DNS server from the highest priority network card in your PC, thus ignoring what your ipconfig/all displayed configuration. Normally that is the DNS setting on your LAN Network card.

So you have 3 possible action to do:

1) change registry on your PC (which i would not recommend)
2) change the priority of your network cards (http://support.microsoft.com/kb/2526067), giving highest priority to your Cisco VPN Virtual Adapter. This one works fine, i have tested it before.
3) give up and do without name resolution

hope this helps
max
0

Featured Post

On Demand Webinar - Networking for the Cloud Era

This webinar discusses:
-Common barriers companies experience when moving to the cloud
-How SD-WAN changes the way we look at networks
-Best practices customers should employ moving forward with cloud migration
-What happens behind the scenes of SteelConnect’s one-click button

Question has a verified solution.

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

In this article, I will show you HOW TO: Perform a Physical to Virtual (P2V) Conversion the easy way from a computer backup (image).
It’s been over a month into 2017, and there is already a sophisticated Gmail phishing email making it rounds. New techniques and tactics, have given hackers a way to authentically impersonate your contacts.How it Works The attack works by targeti…
In this video, we discuss why the need for additional vertical screen space has become more important in recent years, namely, due to the transition in the marketplace of 4x3 computer screens to 16x9 and 16x10 screens (so-called widescreen format). …
The Task Scheduler is a powerful tool that is built into Windows. It allows you to schedule tasks (actions) on a recurring basis, such as hourly, daily, weekly, monthly, at log on, at startup, on idle, etc. This video Micro Tutorial is a brief intro…

732 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