There is a GUI for the Gnome Networkmanager client, would it be a lot of work to translate it to KDE?
http://sstp-client.sourceforge.net/#Network_Manager_Plugin

Its been so long since this was first requested. At least some kind of a response would be nice.

It must be a small body of work, unless the NetworkManager implementations between GNOME and KDE are drastically different. But in AUR we have all that is required, it just seems that plasma-nm requires new VPN services to be added which doesn't sound right architecturally speaking. But it seems it could be the truth, as upon first setting up a new KDE system I have loads of VPNs in the list yet none of them have their underlying stack installed and you need to install the ones you want to use individually. A bit backwards to say the least but please guys, SSTP is growing and works brilliantly for us currently residing behind the GFC (Great Firewall of China :-)

Cheers!

Git commit f39cd2eac71ee630f542dc890c5a26ef287ac423 by Jan Grulich.
Committed on 10/06/2015 at 13:08.
Pushed by grulich into branch 'master'.

Add SSTP VPN plugin
REVIEW:124051
FIXED-IN:5.4.0

M  +2    -0    vpn/CMakeLists.txt
A  +32   -0    vpn/sstp/CMakeLists.txt
A  +4    -0    vpn/sstp/Messages.sh
A  +64   -0    vpn/sstp/nm-sstp-service.h     [License: GPL (v2+)]
A  +62   -0    vpn/sstp/plasmanetworkmanagement_sstpui.desktop
A  +81   -0    vpn/sstp/sstp.cpp     [License: GPL (v2/3)]
A  +41   -0    vpn/sstp/sstp.h     [License: GPL (v2/3)]
A  +382  -0    vpn/sstp/sstpadvanced.ui
A  +75   -0    vpn/sstp/sstpauth.cpp     [License: GPL (v2/3)]
A  +48   -0    vpn/sstp/sstpauth.h     [License: GPL (v2/3)]
A  +70   -0    vpn/sstp/sstpauth.ui
A  +401  -0    vpn/sstp/sstpwidget.cpp     [License: GPL (v2/3)]
A  +53   -0    vpn/sstp/sstpwidget.h     [License: GPL (v2/3)]
A  +171  -0    vpn/sstp/sstpwidget.ui

http://commits.kde.org/plasma-nm/f39cd2eac71ee630f542dc890c5a26ef287ac423