WireGuard

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wikipedia:WireGuard

WireGuard is a free and open-source software application and communication protocol that implements virtual private network techniques to create secure point-to-point connections in routed or bridged configurations.

 $ sudo apt install wireguard

Included in 2020 into the Linux Kernel 5.6

• NordVPN offers NordLynx built on WireGuard

WireGuard's encryption speed claims to be faster that IPsec group protocols.

Tailscale

Tailscale, formed in March 2019.

• it's based on peer-to-peer VPNs rather than piping all VPN traffic through a single concentrator.

Tailscale works info: https://tailscale.com/blog/how-tailscale-works/

See also

• VPN: IPsec (Openswan), OpenVPN, Forticlient, GlobalProtect (PAN-OS), WireGuard (Linux Kernel), Tailscale, PulseSecure, WebVPN, SoftEther, ESP, IKE, AWS VPN, Zerotier, VPN client, Pritunl, GCP Cloud VPN