Question: I am trying to connect to a Windows based SSTP VPN network. I am using OS X Yosemite, I was wondering if there is any solution that can allow me to connect to a SSTP based VPN. 

For the record, I have already tried using EasyVPN, iSSTP, iSSTP2. all of which failed to connect, and they all seem to be not supported anymore.

Answer: 
As others pointed out the best way would be to install sstp-client but iSSTP can also work, however note the following:

1. You need to ensure you get the latest version (**1.0.15** currently) as 1.0.14 has a bug and does not work.
2. If you use **iSSTP** ensure you replace their bundled sstpc file (Contents/Resources) with the latest from where you installed it (/usr/local/Cellar/sstp-client/1.0.15/sbin)

So,

Install with `brew install sstp-client`

Run:

```
sudo /usr/local/Cellar/sstp-client/1.0.15/sbin/sstpc --password *** --user *** <host>

```

For PAP I use the following command:

```
sudo /usr/local/Cellar/sstp-client/1.0.15/sbin/sstpc --password *** --user *** <host> noauth defaultroute require-pap

```

In iSSTP (once you replace their old binary) ensure you set the pptp options in advanced (see here: <https://linux.die.net/man/8/pppd>)
I think you will find [Tunnelblick](https://tunnelblick.net/%20%22Tunnelblick) will do it without any problems. It's well supported and has good documentation on the site.