Hysteria 2 VPN — QUIC tunnel that survives lossy links
QUIC-based tunnel with a custom Brutal congestion control. Built for packet loss and congested links, with salamander obfuscation to defeat QUIC fingerprinting.
Hysteria 2 runs over QUIC (UDP) and replaces the kernel congestion control with its own loss-tolerant algorithm. Where TCP-based tunnels collapse on a lossy mobile, satellite or hotel-Wi-Fi link, Hysteria keeps throughput high. We ship three presets per node: clean (fastest, self-signed cert), ACME (real Let’s Encrypt TLS for inspected networks), and obfuscated (salamander wraps every datagram so there is no QUIC fingerprint to match).
Good for
- Mobile, satellite and congested Wi-Fi with high packet loss
- Networks that actively fingerprint QUIC (use the obfs preset)
- Squeezing maximum throughput per round-trip out of a bad link
Caveats
- Needs a dedicated app (NekoBox / Hiddify / sing-box) — no native OS support
- UDP-based: some networks throttle or block UDP entirely
- The clean preset uses a self-signed cert (?insecure=1) — pick ACME for sterile TLS