Solved

L2TP Server on Mac Server Not Working - Ports Not Open

Posted on 2013-01-07
9
1,010 Views
Last Modified: 2013-04-15
Hi. We have a client with a MAC server running an L2Tp VPN. Since an OS update it's now not accepting VPN connections. The VPN server is running and the port forwarding is setup correctly, however if I run a port scan from outside it's telling me that port 1701 is not accessible. When i try to connect on VPN it says connection refused. I ran a port scan internally on the Mac Server through network utilities and it doesn't show port 1701 as being open.

How can i troubleshoot this further and / or open port 1701 to allow L2TP traffic again?

Thanks
Jim
0
Comment
Question by:James Parsons
  • 5
  • 3
9 Comments
 
LVL 4

Expert Comment

by:vidovic
ID: 38754332
You need to open UDP ports 500, 1701 and 4500 for L2TP
You need to open TCP ports 1723 for PPTT
All these ports need to be opened on your router/firewall and forwarded to the server's IP address.
0
 

Author Comment

by:James Parsons
ID: 38755118
Yes. Those have already been done. All required ports are open and forwarded.
0
 
LVL 4

Expert Comment

by:vidovic
ID: 38757185
Are your Service ACLs set up for this user?? Does he/she have access to this service?
0
Create the perfect environment for any meeting

You might have a modern environment with all sorts of high-tech equipment, but what makes it worthwhile is how you seamlessly bring together the presentation with audio, video and lighting. The ATEN Control System provides integrated control and system automation.

 

Author Comment

by:James Parsons
ID: 38757221
I believe so. It was working fine until an Apple OS update. Now it just says that the server isn't responding when they try to connect. I can see from the Utilities screen that the ports for L2TP are not open.
0
 
LVL 4

Expert Comment

by:vidovic
ID: 38757229
Did you try connecting as an Admin user or another user just to check Authorization?
0
 

Author Comment

by:James Parsons
ID: 38757283
Yes. And when I do a port scan externally it shows the port as not being opened. I also tried connecting across the LAN rather than using the external IP to rule out port forwarding - same result. I'm convinced it's a port issue - just not sure where to look or fix it.
0
 
LVL 19

Expert Comment

by:Kash
ID: 38800715
what about a PPTP connection. Does that work ?

Does your router support VPN. Have you tried router to do the VPN to see if it works on that ?

What version of OS X Server are you running ?

What kind of router is it ?
0
 

Accepted Solution

by:
James Parsons earned 0 total points
ID: 38954415
We had to setup a PPTP connection and that seemed to work ok.
0
 

Author Closing Comment

by:James Parsons
ID: 39079788
None of the suggestions worked so we setup a PPTP connection as we had no choice and needed to get it working somehow.
0

Featured Post

Easy, flexible multimedia distribution & control

Coming soon!  Ideal for large-scale A/V applications, ATEN's VM3200 Modular Matrix Switch is an all-in-one solution that simplifies video wall integration. Easily customize display layouts to see what you want, how you want it in 4k.

Question has a verified solution.

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

Suggested Solutions

A common question or need, when setting-up a new Mac for someone would be to make all of the applications, installed, available from the dock. Many people often do not realize an application is installed unless it is in the dock. Creating a custo…
In this article we have discussed about the OS X EI Capitan and how to fix Wi-Fi issue in OS X El Capitan. We have explained how to delete system level preferences and create a new Wi-Fi location to resolve Wi-Fi issue.
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …

820 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