> For the complete documentation index, see [llms.txt](https://how.router.works/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://how.router.works/remote/vpn-tunnel.md).

# VPN Tunnel

- [ZeroTier](https://how.router.works/remote/vpn-tunnel/zerotier.md): ZeroTier is a software-defined networking (SDN) solution that creates secure virtual networks using encrypted P2P tunnels, without requiring public IP addresses.
- [Tailscale](https://how.router.works/remote/vpn-tunnel/tailscale.md): Tailscale is a VPN solution that provides seamless connectivity between devices across different networks without the need for public IP addresses or complicated firewall rules.
- [Wireguard](https://how.router.works/remote/vpn-tunnel/wireguard.md): WireGuard is a modern, high-performance VPN protocol that establishes secure point-to-point connections using advanced cryptography.
- [Openvpn](https://how.router.works/remote/vpn-tunnel/openvpn.md): OpenVPN  uses SSL/TLS to establish secure, encrypted tunnels. It supports both site-to-site and remote access setups, offering strong security through certificate-based authentication.