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
Solved

DNS issues with clients connected via AT&T VPN

Posted on 2013-01-23
1
1,138 Views
Last Modified: 2013-02-12
Hi,

I hope someone can help. I have an issue whereby, when clients connect to the VPN, I cannot ping them or access them via their computer name. This means that when the helpdesk are trying to troubleshoot issues, they have to get end-users to find out their VPN IP address.

I have just tested it with a new client (XP but most are Windows 7). I joined the client to the domain then disconnected it from the corporate network. I connected it to a broadband connection then connected to the VPN. I then tried to ping it by its name from my machine. When I do this I get:

Reply from 10.132.1.185: Destination host unreachable.

10.132.1.185 is my machine that I'm pinging it from so I'm a bit confused by that. So I then tried pinging from another internal server on our network, and it just times out.

I did an NSLookup on the client and it is using our internal DNS server and resolving names correctly. I also checked the bindings and the VPN adaptor is at the top.

Does anyone have any ideas how to resolve this?

DCDiag /test:DNS checks out fine.

Thanks.
0
Comment
Question by:wiggumc
1 Comment
 
LVL 77

Accepted Solution

by:
Rob Williams earned 500 total points
ID: 38810250
With a VPN connection, even choosing "register this connection's address in DNS", on the connecting  client does not usually allow the connection to register in DNS.  If it did, it could be problematic as each time the client connects they could have a different IP and DNS, if scavenging is enabled, generally only does so every 7 days so you could have many  DNS entries for the same client.

I am not familiar with the AT&T VPN, but with a Windows VPN you can look in RRAS to match the clients login name (not the PC name) with their IP, and you can do the same in the VPN logs for many other types of 3rd party VPN's.  This is usually the best option.
0

Featured Post

The New “Normal” in Modern Enterprise Operations

DevOps for the modern enterprise offers many benefits — increased agility, productivity, and more, but digital transformation isn’t easy, especially if you’re not addressing the right issues. Register for the webinar to dive into the “new normal” for enterprise modern ops.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Reverse DND setup 6 38
Internet options/Settings 1 44
Separate DNS forwarding 2 17
Price for Fiber 13 24
ADCs have gained traction within the last decade, largely due to increased demand for legacy load balancing appliances to handle more advanced application delivery requirements and improve application performance.
I had an issue with InstallShield not being able to use Computer Browser service on Windows Server 2012. Here is the solution I found.
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…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

808 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