Does Linux have a built in VPN?
No, Linux doesn't have a built-in VPN in the sense we use the term in this article. Most distributions have support for tunneling protocols like OpenVPN, IPSec, or even WireGuard. Though, to take advantage of them, you'll still need an outside server to connect to.
Is there a free VPN for Linux?
Safe unlimited VPN for Linux
Proton VPN is a free and unlimited VPN for Linux from the team that created Proton Mail, the world's most popular encrypted email service.