The sstp-vpn from rivolity

# How to configure a SSTP VPN in Debian/Ubuntu

Connect to VPN using SSTP

Installation of the sstp-client

Add the following PPA (Personal Package Archive) for Debian/Ubuntu (install the add-apt-repository application if you don't have it with sudo apt-get install software-properties-common)

sudo add-apt-repository ppa:eivnaes/network-manager-sstp

and install the SSTP client

sudo apt-get install sstp-client

OPTIONAL: if your use the Network Manager utility you can also install the plugin for SSTP VPN by

sudo apt-get install network-manager-sstp

Configuration of connection Profile

You can use the CLI to do what nm-applet does behind the backend:

Create a nmconnection file

Create a nm connection file in /etc/NetworkManager/system-connections/NAME_OF_CONNECTION.nmconnection

in our example, I have named my profile as below.

/etc/NetworkManager/system-connections/VPNCLIENT.nmconnection

Configuration of Profile

the content of your profile should look like that. you need to change the user, the gateway and the password.

[connection]
id=VPNCLIENT
uuid=2815492f-7e56-435e-b2e9-246bd7cdc664
type=vpn
autoconnect=false
permissions=
timestamp=1652878614

[vpn]
gateway=Gate-Way-Or-IP(exemple > con.entreprise.com or IP)
ignore-cert-warn=yes
password-flags=0
refuse-chap=yes
refuse-eap=yes
refuse-pap=yes
user=YOUR-USER-NAME
service-type=org.freedesktop.NetworkManager.sstp
connection-type=password

[vpn-secrets]
password=YOUR-PASSWORD

[ipv4]
dns-search=
method=auto

[ipv6]
addr-gen-mode=stable-privacy
dns-search=
method=auto

[proxy]

Change configuration permission

the connection that you've created should have permission 600

sudo chmod 600 /etc/NetworkManager/system-connections/*

Configuration of NetworkManager

Create a Conf file

This configuration file is meant to manage your network interface. Create the conf file as below /etc/NetworkManager/conf.d/10-globally-managed-devices.conf with the following values

[keyfile]
unmanaged-devices=none

In that way the NetworkManager will manage your interface.

Configurate the NetworkManager in Netplan

Adding the NetworkManager to Netplan.

In /etc/netplan/01-netcfg.yaml, or /etc/netplan/50-cloud-init.yaml, or (in my case) /etc/netplan/00-installer-config.yaml (it may be a different name but it should be the only file located in that directory), add renderer: NetworkManager after network:

In my example, I've added the renderer at the end of the configuration, in network section.

# This is the network config written by 'subiquity'
network:
  ethernets:
    enp0s3: #you may have a different name here
      dhcp4: true
  version: 2
  renderer: NetworkManager

Restart Services

Apply the new netplan yaml configuration.

sudo netplan apply

Restart network manager

sudo service NetworkManager restart

Load VPN connection

List connection

nmcli con

The result of this command should be similar to this:

user@user:~$ sudo nmcli con
NAME            UUID                                  TYPE      DEVICE 
netplan-enp0s3  1eef7e45-3b9d-3043-bee3-fc5925c90273  ethernet  enp0s3
VPNCLIENT       2815492f-7e56-435e-b2e9-246bd7cdc664  vpn       --

Load VPN connection profile

sudo nmcli con up id VPNCLIENT

The result of this command should look like that:

user@user:~$ sudo nmcli con up id VPN
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/2)

By typing ifconfig, you should see a new Network Interface PPP0 at the end of the console output.

enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.2.15  netmask 255.255.255.0  broadcast 10.0.2.255
        inet6 fe80::a00:27ff:fef0:a13c  prefixlen 64  scopeid 0x20<link>
        ether 08:00:27:f0:a1:3c  txqueuelen 1000  (Ethernet)
        RX packets 13443  bytes 1447523 (1.4 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 9217  bytes 1982243 (1.9 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 20100  bytes 2605349 (2.6 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 20100  bytes 2605349 (2.6 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST>  mtu 1500
        inet 10.10.10.10  netmask 255.255.255.255  destination 10.10.10.18
        ppp  txqueuelen 3  (Point-to-Point Protocol)
        RX packets 11  bytes 408 (408.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 12  bytes 172 (172.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Unload the VPN connection profile

sudo nmcli con down id VPNCLIENT

the result of this command

user@user:~$ sudo nmcli con down id VPNCLIENT
Connection 'VPNCLIENT' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/2)

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