Connections to 2012R2 L2TP Server Fail From Windows Client But MAC OS X Works OK

Hello all,

I have a small Domain network and have set up RRAS on the server to accept L2TP connections using a pre shared key.

VPN works fine from Mac OS X & IOS Clients but always fails from Windows clients.

I have added the AssumeUDPEncapsulationContextOnSendRule registry value to

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PolicyAgent

As in this Microsoft KB Link but the connection still fails

NPS is set up and working fine for VPN and Remote Desktop Gateway connections

Any advice is welcomed..

Thanks

Dave
LVL 1
DeclaroAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Aaron TomoskySD-WAN SimplifiedCommented:
Are the windows clients joined to the domain? Do you have a public cert installed?
0
DeclaroAuthor Commented:
Hi Thanks for the reply

Clients are not joined to the domain and yes there is a trusted certificate (GoDaddy DV)

I have narrowed it down to a local problem on the site I'm trying to connect from as it works from other locations

Going to look in depth a their firewall and router etc.

will let you know when I have more info.

Dave
0
Aaron TomoskySD-WAN SimplifiedCommented:
Nice find on the local site problem! Probably something in their firewall not allowing passthrough IPSec.
0
The Five Tenets of the Most Secure Backup

Data loss can hit a business in any number of ways. In reality, companies should expect to lose data at some point. The challenge is having a plan to recover from such an event.

DeclaroAuthor Commented:
Found it was the local firewall and a problem with a NAT policy. Took the quick way and reset the firewall as not many rules. Working fine now.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Aaron TomoskySD-WAN SimplifiedCommented:
Well done. Hope talking through it with me helped but you did the heavy lifting ;)
0
DeclaroAuthor Commented:
It worked
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
RRAS

From novice to tech pro — start learning today.