WireGuard is an open-source VPN software and protocol that will soon be part of the Linux kernel, offering a faster and more secure connection. It is smaller and simpler than most other VPN software, making it easier to audit for security issues. WireGuard clients are already available for various operating systems, and several commercial VPN providers support the WireGuard protocol. The integration of WireGuard into the Linux kernel is expected to make it more widely used and improve its performance.