Open Source gateway VPN performance

  

I was curious how various open source gateway VPNs performed. I set up a test server running Debian Buster and a test device running Android 11. Each setup was tested 5 times using Fast.com and averaged. Note: the test server was a tiny, wimpy machine so focus on the relative differences between them rather than the actual value. Higher is better:

• No VPN: 176 Mbps (baseline)
• OpenConnect ocserv: 100 Mbps
• Tailscale: 78.2 Mbps
• dsnet: 62.6 Mbps
• ZeroTier: 20.8 Mbps

Not tested:

• n2n: couldn't set route on Android and app wasn't supporting latest protocol; also iOS app appears to be abandoned
• Peer-to-Peer VPN from badvpn: splintered community so unclear which is latest (ambrop72, coversocks, shadowsocks, ... ?), unofficial Android app has ads, and iOS currently unsupported