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Wisp-VPN
Wisp VPN is an open-source, free Windows VPN client based on WireGuard targeting users in Russia and CIS to bypass censorship without registration, logs, or speed limits.
AI repository intelligence
FR-AI / ANALYSISWhy it is worth attention
It provides a robust, non-bypassable kill switch using nftables drop verdict, deliberately excludes DNS and LAN exceptions to prevent leaks, and works seamlessly with Tailscale.
Who it is for
- Privacy-conscious users running Cloudflare WARP
- Users who need a reliable kill switch for WireGuard tunnels
- Arch Linux users (tested) and Debian/Ubuntu users
- Developers or sysadmins managing VPN setups alongside Tailscale
Use cases
- Prevent real IP leakage when a WARP tunnel goes down unexpectedly
- Ensure only tunnel traffic exits the machine, blocking all other outbound connections
- Run a kill switch that coexists with Tailscale and other nftables rules
- Automate boot-time setup of WARP and kill switch via systemd services
Strengths
- Immediate, uncircumventable block via nftables drop verdict
- No DNS or LAN exemptions, so ISP DNS or local subnet leaks are impossible
- Supports both IPv4 and IPv6, including neighbor discovery
- Boot persistence via nftables.service and wg-quick@wgcf.service
Considerations
- Requires pre-configured wgcf and `/etc/wireguard/wgcf.conf`
- Intentionally isolates LAN access while kill switch is active (no local subnet traffic)
- Debian/Ubuntu support is implemented but not yet confirmed on real hardware
README quick start
Usage
Description
Minimal CLI tool to manage a Cloudflare WARP (wgcf) tunnel with an nftables kill switch that blocks all traffic unless the VPN is active, preventing IP leaks.
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