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Rupert EghardtFlag for South Africa

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VPN Connection Issue

Hi Guys,

I've setup a VPN connection on a server (Windows Server 2012), but I am unable to establish a connection from external.
Connecting internally to the local IP of the server works just fine ;-)

The error I am receiving is:

"The remote connection was denied, because the username and password combination you provided is not recognised, or the select authentication protocol is not permitted on the remote access server"

When I try to Telnet into the server, I get an initial black green, then the connection has timed-out message

Could this error relate to our router not allowing connections through from the internet, or is this error specific to username / password and authentication issues?

Trying to connect externally, I am using Windows 10, but also tried from another external server with Windows 2016 Standard edition.
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herm paul
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are you using the same username and password at both ends?  and how are you connecting externally?
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Rob Williams
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Thanks Rob,

Our router config is managed by a 3rd party, and the VPN pass through was requested.
From the error I gathered that the problem was authentication related?  (Seems that this is not the case)?
I will ask for the router VPN-port config to be confirmed and ports allowed as per your post.

VPN Type on the client is set = Automatic
Allow these protocols = MS Chap version 2
Network IP4, Advanced = Use remote default gateway is set to off
Whet type of VPN?
PPTP has a two step authentication. It requires port 1723 be forwarded for the initial hand shaking, and then uses GRE to do the authentication.  If GRE pass-through is not enabled you get an authentication error, even if username and password are not enabled.  GRE pass-through is not configured by port forwarding.

I truly hope you are not using PPTP.