PPTP

WARNING: PPTP has known security vulnerabilities and should only be used if you cannot install openVPN or L2TP/IPSec is being blocked.

Authentication Failed using the correct login details
It’s most likely caused by your firewall or internet router blocking your connection. PPTP needs TCP port 1723 and IP Protocol 47(GRE) allowed/forwarded to ...
Wed, 26 Sep, 2018 at 9:58 PM
More than one PPTP connection on the same router
Most “home routers” only supports one PPTP connection at a time. Use OpenVPN if you want to use more then one computer at a time.
Wed, 26 Sep, 2018 at 9:59 PM
PPTP error 619
PPTP error 619 usually means one of two things... Firewall/router issue: PPTP needs TCP port 1723 and IP Protocol 47(GRE) allowed/forwarded to work. Some ...
Wed, 26 Sep, 2018 at 10:00 PM