Solved

VPN Server 2012 - unable to connect

Posted on 2014-02-19
7
834 Views
Last Modified: 2014-05-14
Hi Experts,

I have configured an L2TP VPN on my windows 2012 server. I have configure my mac client and it connects no problems. I try to configure my windows client and i receive error 809 cannot connect speak to your network administrator.

Any advise would be welcomed.

Thanks in advance.
0
Comment
Question by:isdd2000
[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
7 Comments
 
LVL 3

Expert Comment

by:cgreiner
ID: 39945391
Not helpful, but I have the same problem. The server in question is behind a NAT firewall and does not have a public IP address directly assigned to a network interface.
0
 
LVL 43

Expert Comment

by:Rob
ID: 39955202
Sounds like the windows client may be firewalling the connection.  Have you tried disabling the firewall on the client?
0
 
LVL 15

Expert Comment

by:Berkson Wein
ID: 39956232
Out of the box, MS workstations don't support L2TP when the server is behind a NAT router.  Is yours?

See general info here: http://support.microsoft.com/kb/926179 

Hope this gets you started...
0
Comparison of Amazon Drive, Google Drive, OneDrive

What is Best for Backup: Amazon Drive, Google Drive or MS OneDrive? In this free whitepaper we look at their performance, pricing, and platform availability to help you decide which cloud drive is right for your situation. Download and read the results of our testing for free!

 
LVL 39

Expert Comment

by:Aaron Tomosky
ID: 39956718
Weinbark is correct, howerer another workaround is to use PPTP (for all or just for windows workstations). It works fine through NAT without client changes. Or you can get a router that allows you to terminate your vpn connections there. For example I have setup a sonicwall configured to auth to your active directory but terminate the vpn at the router.
0
 
LVL 15

Accepted Solution

by:
Berkson Wein earned 500 total points
ID: 39957033
Sure PPTP will work, but MUCH more secure and easier to use from more locations is SSTP, Microsoft's proprietary newish technology.  It has you use a SSL certificate installed on the host, so your client knows where it's connecting to is legit and it uses port 443 (https) so it'll work from about everywhere, even where they have port 1723 and GRE (needed for PPTP) blocked.

Downside, is that it requires Windows for now (maybe there's 3rd party clients that I don't know about).
0
 

Author Comment

by:isdd2000
ID: 39960583
Hi Guys,

It is behind a NAT, its just a standarded modem but it is running NAT - will try the registry changes and get back to you.
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Windows 2012 configuration and hyper-V 12 87
Promote Server 2012 R2 on Server 2003 domain 13 77
Routers to buy for MDT Multitasking 6 81
RDP exploit 14 28
There's a better way to communicate time sensitive or critical info.
IT certifications are a concrete representation of continual learning on the part of the candidate.  Continual learning is necessary for the long term success of an IT professional, but are IT certifications the right path for you?
In this Micro Tutorial viewers will learn how to use Windows Server Backup to create full image of their system. Tutorial shows how to install Windows Server Backup Feature on Windows 2012R2 and how to configure scheduled Bare Metal Recovery backup.…
This tutorial will walk an individual through the process of configuring basic necessities in order to use the 2010 version of Data Protection Manager. These include storage, agents, and protection jobs. Launch Data Protection Manager from the deskt…

710 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