Choosing the Right VPN for Peach OSI

Peach OSI is a Debian-based distribution that prides itself on using the Linux-libre kernel and shipping exclusively free-software packages. It employs apt as its package manager and offers a range of desktop environments—GNOME, KDE Plasma, XFCE, LXDE—out of the box. The target audience is privacy-conscious, FOSS-centric users who often want to control every aspect of their networking stack. When selecting a VPN for Peach OSI, the following points become crucial:

• Compatibility with the Linux-libre kernel: Avoid VPNs that rely on proprietary kernel modules favour those using standard tun/tap or WireGuard interfaces.
• Native .deb packages or APT repositories: Simplifies installation and keeps you in sync with regular apt update apt upgrade workflows.
• Kill switch and DNS leak protection: Ensures no traffic or DNS queries slip outside the encrypted tunnel—critical for privacy-focused users.
• CLI tooling and systemd integration: Many Peach OSI users manage headless servers or tiling window managers, so robust command-line utilities and service units are a must.

Taking these into account, the most suitable VPNs for Peach OSI are:

• ExpressVPN – Provides a polished .deb package, systemd service, kill switch and offers an easy CLI.
• NordVPN – Maintains an official APT repo, strong leak protection, plus both OpenVPN and NordLynx (WireGuard-based).
• Mullvad – Privacy-first, supports both OpenVPN and WireGuard, distributes a .deb, and uses a simple account code instead of email.
• ProtonVPN – Offers CLI tooling with its protonvpn-cli package and strong open-source credentials.

Comparison Table

Installation Configuration Guides

1. ExpressVPN

ExpressVPN offers an official Debian package and APT repository. It uses the Lightway protocol alongside OpenVPN, and integrates a systemd-based kill switch.

Steps:

1. Download and install the repository package:

wget -O expressvpn.deb https://www.expressvpn.works/clients/linux/expressvpn_latest_amd64.deb
sudo apt install ./expressvpn.deb
sudo apt update

2. Activate your subscription:

expressvpn activate YOUR_ACTIVATION_CODE

3. Enable the kill switch (network lock):

expressvpn preferences set network_lock on

4. Connect to a server:

expressvpn connect usny

2. NordVPN

NordVPN provides an APT repository with both OpenVPN and NordLynx (WireGuard-based) protocols, plus an easy CLI tool that integrates kill switch and auto-connect.

Steps:

1. Add NordVPN’s GPG key and repository:

sudo apt install curl gnupg
curl -fsSL https://downloads.nordcdn.com/apps/linux/gpg  sudo gpg --dearmor -o /usr/share/keyrings/nordvpn-archive-keyring.gpg
echo deb [signed-by=/usr/share/keyrings/nordvpn-archive-keyring.gpg] 
https://repo.nordvpn.com/deb/nordvpn/debian stable main  
sudo tee /etc/apt/sources.list.d/nordvpn.list
sudo apt update

2. Install the CLI client:

sudo apt install nordvpn

3. Log in and enable the kill switch:

nordvpn login
nordvpn set killswitch on

4. Connect using NordLynx:

nordvpn set technology nordlynx
nordvpn connect United_States

3. Mullvad

Mullvad is beloved by privacy advocates for its anonymous account codes and open-source transparency. It distributes a .deb package and supports WireGuard natively.

Steps:

1. Download and install the Mullvad .deb:

wget -O mullvad.deb https://mullvad.net/download/app/deb/latest
sudo apt install ./mullvad.deb
sudo apt --fix-broken install

2. Install WireGuard tools:

sudo apt install wireguard-tools

3. Log in using your Mullvad account code:

mullvad login YOUR_ACCOUNT_CODE

4. Start Mullvad with WireGuard and enable the kill switch:

mullvad relay set wireguard
mullvad set port-forward yes
mullvad set killswitch on
mullvad connect

With these options configured, your Peach OSI system will maintain full DNS leak protection, employ hardware-route kill switches, and integrate smoothly into any of the distro’s desktop environments or headless setups.