Add uvpn #57

This file is taken from dhcp-4.3.2-0.x86_64/source/client/scripts/linux. The code will be embedded in th uvpn script in a later commit, but in an updated and reduced form. This external copy of the file serves as documentation so we can track the changes done to the code in the repository.

This tools allows a user to create a (net,mnt,user)-namespace container which can be used to run openvpn. This tools uses sudo to gain privileges for the setup and requires a line like ALL ALL=NOPASSWD: /usr/bin/uvpn start_as_root,/usr/bin/uvpn stop_as_root in the sudoers file. The container will be connected to the guest network. For this the system needs a working vlan.guest0 vlan interface into the guest network. The usage for the user might be along this pattern: uvpn start uvpn exec openvpn ~/.charite-username.ovpn echo -e "search charite.de\nnameserver 141.42.1.1\nnameserver 141.14.16.1" | uvpn exec bash -c 'cat > /etc/resolv.conf' uvpn exec firefox --new-instance --ProfileManager uvpn exec firefox --new-instance -P charite uvpn show uvpn stop_container Because the network of the container is separate from the host system, ip based X11-forward will not work without more setup. So the above example would only work on the local workstation.

Add uvpn #57

Add uvpn #57

Commits on Nov 2, 2018