Virtual Private Network (VPN)

 

 
Requirements:
  • Internet connection

VPN (Virtual Private Network) makes it possible access Chalmers computer resources via the Internet, from for example at home. A computer connected with VPN will appear as if it is a part of Chalmers network and will have a Chalmers IP address (129.16.x.y).
 
Chalmers VPN service is not primarily made as a security solution but instead a way to extend the chalmers network. When the computer is connected to Chalmers VPN you still have to connect to the services you want to use, for example home/group directories, according to their documentation.
 
When your computer is connected to Chalmers VPN you might have issues reaching network resources on other networks, even the ones where the computer physically is located at. To fix this simply disconnect the Chalmers VPN.
 
Instructions:


We've tested this with sstp-client 1.0.9 och network-manager-sstp 0.9.4-2.
We can't guarantee that it will work with other versions.

How to connect with NetworkManager:

1. Open the dialog 'Network Connections' (NetworkManager). In Fedora we found it by right clicking the network
   icon and choosing "Edit connections".
   It is possible to start it with the command "nm-connection-editor". Click on the VPN-tab,

2. Open Add -> SSTP. If SSTP is not present in the drop-down menu you must install the
   sstp-client and the plugin for NetworkManager.
   You can get the installation files here:

   http://sourceforge.net/projects/sstp-client/files/

   For Fedora install the following rpm-packages:

   sstp-client
   NetworkManager-sstp
 
   For Ubuntu install the following deb-packages:

   libsstp-client
   network-manager-sstp
   network-manager-sstp-gnome (maybe not necessary)

   When you have installed the packages you must re-boot your computer.


3. Start 'Network Connections' again och click on the VPN-tab. Click on Add
   ---> SSTP. Enter CID and Chalmers password (it is stored encrypted in  ~/.gnome2/keyrings/login.keyring).
   Give the connection a name eg "Chalmers VPN". Gateway should be vpn-gw.chalmers.se.
   The NT-domain and CA certificate options in the dialog should not be used.

4. Click on Advanced. MSCHAP and MSCHAPv2 should be checked under
   "Authentication". Only "Use TCP header compression" should be checked
   under "Security and compression". Nothing should be checked under "Echo".
   Click OK.  

5. Go to the IPv4 tab. Choose "Method": "Automatic (VPN) adresses only".
   It's important that you switch from the default method "Automatic (VPN)".
   Enter "129.16.1.53,129.16.2.53" as DNS servers. The rest of the
   configuration options should not be used.

6. Click on Save, close the dialog.

7. Click on the Network icon (should be in the upper GNOME-panel) and connect
   by clicking on the VPN-connection "Chalmers VPN" (or whatever name you gave
   it). Diconnect the same way.

8. If the connection fails: check that you have given the right password, try
   re-booting the computer.

Sceduled service:

There are scheduled services at mondays 3 AM, during this time there will be a short interrupt and you will eventually be disconnected from the VPN session.
 
Links:

 

Publicerad: on 20 jul 2011. Ändrad: fr 05 apr 2013