Solved

DNS not working on VPN Connections

Posted on 2014-09-09
2
171 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
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

Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

Question has a verified solution.

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

Today, still in the boom of Apple, PC's and products, nearly 50% of the computer users use Windows as graphical operating systems. If you are among those users who love windows, but are grappling to keep the system's hard drive optimized, then you s…
While rebooting windows server 2003 server , it's showing "active directory rebuilding indices please wait" at startup. It took a little while for this process to complete and once we logged on not all the services were started so another reboot is …
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
Windows 8 came with a dramatically different user interface known as Metro. Notably missing from that interface was a Start button and Start Menu. Microsoft responded to negative user feedback of the Metro interface, bringing back the Start button a…

809 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