TalTech VPN: Difference between revisions

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==Usage==
==Usage==
'''NB! About connecting using OpenFortiGUI''':
'''NB! About connecting using OpenFortiGUI''':
* for connection: use SSL
* please use SUDO -E parameter in OpenfortiGUI settings! (File→Settings). Might be necessary (not usually) to disable temporarily for certificate retrieval in first time.
* please use SUDO -E parameter in OpenfortiGUI settings! (File→Settings). Might be necessary (not usually) to disable temporarily for certificate retrieval in first time.
* also it might be necessary to turn off the ''Set DNS'' parameter (see [https://github.com/theinvisible/openfortigui/issues/41 this report]). Choose Edit connection and under Options tab uncheck '''Options > Advanced > Set DNS''' so that openfortivpn does not handle DNS or overwrite ''/etc/resolv.conf''. Otherwise after disconnecting is Internet connectivity lost with error message ''Temporary failure in name resolution''.
* also it might be necessary to turn off the ''Set DNS'' parameter (see [https://github.com/theinvisible/openfortigui/issues/41 this report]). Choose Edit connection and under Options tab uncheck '''Options > Advanced > Set DNS''' so that openfortivpn does not handle DNS or overwrite ''/etc/resolv.conf''. Otherwise after disconnecting is Internet connectivity lost with error message ''Temporary failure in name resolution''.

Revision as of 14:34, 2 February 2024

Uni-ID

about Uni-ID (EST/ENG)

Uni-ID is required to use TalTech VPN.

eduVPN

NB!

  • Since June 30, 2024 eduVPN will be closed and replaced with FortiClient VPN
  • Since July 2021 has been old OpenVPN service replaced by eduVPN, used for library.

More information:

Usually generated OpenVPN settings are enough. Still there is a separate eduvpn-client possible to use: 

sudo apt install apt-transport-https curl
curl -L https://app.eduvpn.org/linux/deb/eduvpn.key | sudo apt-key add -
echo "deb https://app.eduvpn.org/linux/deb/ stable main" | sudo tee -a /etc/apt/sources.list.d/eduvpn.list
sudo apt update
sudo apt install eduvpn-client
sudo ldconfig && sudo dpkg --configure -a && sudo apt-get clean

For OpenVPN installation, please see here

For smart devices, there are an eduVPN clients available: Android | iOS, that makes connection via TAAT authentication.

Forticlient VPN

Does not allow to access the TTU library outside university. You will get only a secure VPN connection.

Packages

Usage

NB! About connecting using OpenFortiGUI:

  • for connection: use SSL
  • please use SUDO -E parameter in OpenfortiGUI settings! (File→Settings). Might be necessary (not usually) to disable temporarily for certificate retrieval in first time.
  • also it might be necessary to turn off the Set DNS parameter (see this report). Choose Edit connection and under Options tab uncheck Options > Advanced > Set DNS so that openfortivpn does not handle DNS or overwrite /etc/resolv.conf. Otherwise after disconnecting is Internet connectivity lost with error message Temporary failure in name resolution.

Also whenever needed, uncheck Options > PPPD > PPPD no peerdns so that pppd does handle DNS - and hopefully does the right thing.

  • on first connection attempt, the certificate must be accepted
  • next connection attempt can be actually connect via VPN
  • at file /etc/sudoers.d/openfortigui there is a line (will be created automatically during OpenFortiGUI setup):
 %sudo  ALL=NOPASSWD:SETENV: /usr/bin/openfortigui --start-vpn *

This means, that all users in group sudo can use it without password with superuser rights. Although running the app is regular (as user in group sudo) without actual sudo command.

  • When you got an error Peer refused to agree to his IP address in log then you need to enable ipcp-accept-remote (or possibly ipcp-accept-local - choose one at a time) in /etc/ppp/options - this will work immediately on next connection, no services need restart. More details at this issue

Connecting

juhis

... in IT College:

In IT College there is an option to use SSH tunnel using http://enos.itcollege.ee/ server using your Uni-ID credentials. For convenient usage there is a Sshuttle (article in Estonian) available. This SSH tunnel is available also for students. MS Windows users can use puTTY. Also macOS users can use SSH tunnel.

OpenVPN

NB! Since July 2021 OpenVPN has been replaced by eduVPN.

Allows to access the TTU library outside university. Additionally you will get a secure VPN connection. Uni-ID account is required.

Client software

Installation in Debian/Ubuntu

  • open the terminal, e.g. CTRL+ALT+T and copy-paste the following line and press Enter

copy-paste in terminal: SHIFT+CTRL+C, SHIFT+CTRL+V 

sudo apt-get update && sudo apt-get install openvpn
sudo ldconfig && sudo dpkg --configure -a && sudo apt-get clean

You may want to search also openvpn-blacklist package, but it might be also deprecated and not available.

  • for GUI Network Manager:
sudo apt-get update && sudo apt-get install network-manager-openvpn-gnome
sudo ldconfig && sudo dpkg --configure -a && sudo apt-get clean

You may want to search the package openvpn-systemd-resolved and also install it to integrate OpenVPN with systemd. [1]

Configuration

  • download the preconfigured client.ovpn from https://toru.ttu.ee/
  • use your Uni-ID credentials to login and also later to authenticate in OpenVPN
  • for GNU/Linux in file client.ovpn after setenv PUSH_PEER_INFO please add the following lines and then save the file:

script-security 2
up /etc/openvpn/update-resolv-conf
down /etc/openvpn/update-resolv-conf

Connecting in Debian/Ubuntu

  • use your Uni-ID credentials
  • open the terminal, e.g. using CTRL+ALT+T
  • navigate to folder where the client.ovpn is saved or provide the full path
  • sudo openvpn --config client.ovpn or use more convenient way - the alias created below

Usually there is possible to import *.ovpn files into graphical network manager[2]. In Ubuntu 16.04 LTS cannot be imported current but in Ubuntu 18.04 LTS already can.

Convenient login in GNU/Linux

  • open the terminal, e.g. using CTRL+ALT+T
  • create an alias:
    • nano ~/.bash_aliases #open CLI text editor
    • alias vpn-ttu='sudo openvpn --config /path/client.ovpn' #add appropriate alias and path to client.ovpn, then save the file
  • source ~/.bash_aliases (or reopen terminal or relogin)
  • add permissions to run OpenVPN without entering a password
    • sudo nano /etc/sudoers.d/permissions #the file name permissions could be replaced whatever else you like
    • username ALL=(ALL) NOPASSWD: /usr/sbin/openvpn #replace username with your real one and then save the file
  • type your new alias vpn-ttu in terminal to start a VPN session


in nano text editor

  • save the file:
    • CTRL+O and Enter if you agree the proposed file name (or enter a new one if needed)
    • or F3
  • quit the file:
    • CTRL+X
    • or F2


More information about...

Benefits of TalTech VPN

TalTech helpdesk

References

  1. ↑ Network Manager
  2. ↑ Import .ovpn to Network Manager
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