How to choose, use and configure a VPN in Karoshi (Tutorial)

Choosing the Right VPN for Karoshi Linux

Karoshi Linux is a rolling-release distro aimed at power users who crave control and minimal bloat. Under the hood it uses pacman as its package manager, with full access to the Arch User Repository (AUR). Typical desktop environments shipped in Karoshi spins are XFCE, MATE or a stripped-down LXQt, all running on a custom low-latency kernel and systemd 248. Because Karoshi users tend to lean on the command line, expect any VPN solution to integrate cleanly with pacman/AUR, systemd services and NetworkManager’s nmcli.

In selecting a VPN for Karoshi we prioritise:

  • Availability on pacman/AUR (or an easy AUR helper install)
  • Native CLI tools that work in a minimal desktop or headless setup
  • Systemd integration (kill-switch, auto-connect at boot)
  • Support for modern protocols (WireGuard, OpenVPN)
  • NetworkManager plugin compatibility (for XFCE/MATE applets)

Based on those criteria, our top picks are:

  1. Mullvad
  2. ProtonVPN
  3. NordVPN

Comparison Table

VPN Protocols Native CLI Systemd Killswitch NM Plugin
Mullvad VPN WireGuard, OpenVPN Yes Yes Yes
ProtonVPN WireGuard, OpenVPN Yes Yes Yes
NordVPN NordLynx (WireGuard), OpenVPN Yes Yes Yes

Installation Configuration on Karoshi

Mullvad VPN

Mullvad offers a fully open-source CLI client with systemd support. On Karoshi you’ll grab it from AUR using your preferred helper (we’ll use yay below).

1. Install the client:

sudo pacman -Syu
yay -S mullvad-vpn-bin

2. Enable and start the daemon:

sudo systemctl enable --now mullvad-daemon.service

3. Log in with your Mullvad account number:

mullvad account login YOUR_ACCOUNT_NUMBER

4. Connect via WireGuard (recommended) or OpenVPN:

# For WireGuard
mullvad connect wireguard
# For OpenVPN
mullvad connect openvpn

If you use NetworkManager’s nmcli, you can import Mullvad’s WireGuard profile:

mullvad relay set region your-region
mullvad generate-wireguard-config > wg0.conf
sudo mv wg0.conf /etc/wireguard/
sudo systemctl enable --now wg-quick@wg0.service

ProtonVPN

ProtonVPN provides an official CLI client packaged in AUR and supports full systemd killswitch functionality.

1. Install the official CLI:

sudo pacman -Syu
yay -S protonvpn-cli

2. Initialize and log in:

sudo protonvpn init
# Follow prompts to enter your Proton credentials

3. Enable the killswitch service:

sudo systemctl enable --now protonvpn.service

4. Connect to a server:

protonvpn connect --fastest

To integrate with NetworkManager applets, install the plugin and import a WireGuard config:

yay -S networkmanager-protonvpn
protonvpn generate-wireguard-config > pvpn-wg.conf
sudo mv pvpn-wg.conf /etc/wireguard/
sudo systemctl enable --now wg-quick@pvpn-wg.service

NordVPN

NordVPN’s official client for Linux provides NordLynx (their WireGuard fork), auto-connect and a built-in killswitch. It’s available in AUR as nordvpn-bin.

1. Install from AUR:

sudo pacman -Syu
yay -S nordvpn-bin

2. Enable and log in:

sudo systemctl enable --now nordvpnd.service
nordvpn login

3. Set defaults (e.g. killswitch, protocol):

nordvpn set killswitch on
nordvpn set technology NordLynx

4. Connect to a server:

nordvpn connect United_Kingdom

For XFCE/MATE users, NordVPN adds a NetworkManager plugin automatically you’ll see it in your panel applet.

Conclusion

Karoshi’s rolling-release, CLI-centric environment demands VPN clients that marry seamless systemd integration, reliable kill-switches and straightforward installation via pacman/AUR. Mullvad, ProtonVPN and NordVPN all excel on this front. Mullvad shines for open-source purists, ProtonVPN for privacy-focused sysadmins and NordVPN for ease-of-use and advanced tweaks. Whichever you choose, the steps above will have you secure, private and browsing with confidence on Karoshi Linux.

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