timo.schaffner

Q: L2TP VPN Broken in 10.11.6

Hi

 

We have set up an OS X Server running the latest OS X 10.11.6 and running the latest Server Version. Everything else is also up-to-date.

 

We are having issues connecting to the VPN Service set up on OS X Server. It is set up as a L2TP service, and we can successfully connect from a complete outside network using a machine running 10.11.4. We have absolute identically, and by that i mean absolutely, no really, absolutely identically set up three other machines, all running 10.11.6, and they can't connect! We are using the direct IP, not a DNS Record to connect. We have set up the server also that way. We have opened all Ports necessary on our Firewall. We have Passwords and Shared Keys with only alphanumerical Characters no special stuff. So i can have two identical MacBooks, running from the exact same outbound network, set up the VPN over and over and over again, tripple and quadruple checked all passwords and keys, the 10.11.4 one does successfully connect every single time, even upon changing the key and password, and the 10.11.6 machine does not.t

 

What the **** is going on... We are done with testing or researching, it simply can't be, as i have said, i have checked the configuration over and over and over again, i have not yet had the chance to test another 10.11.4 machine, as we have upgraded them all, but maybe i can find one to test. But if this would work, that would mean that Apple broke the VPN somewhere in 10.11.5 or .6 but i need other people to confirm that, that their L2TP tunnels are not working either!

 

And what's funny, is that on the 10.11.4 machine, i have set up a VPN Server in OS X Server the other way around, because i need this to connect to my home network when at the office, and to this one, i can connect on 10.11.6, so it doesn't actually seems to be broken in general. And it doesn't seem that the Server is broken under 10.11.6, because the 10.11.4 Mac can connect to that server. I just really don't know what else to do... I am completely at my wit's end.

 

Maybe some of you have some good ideas on what to do!
Cheers

iMac, OS X El Capitan (10.11), Profilemanager, Netinstall, NetBoot

Posted on Aug 3, 2016 2:36 PM

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