Ars Technica

Nebula VPN routes between hosts privately, flexibly, and efficiently

Just like WireGuard, Nebula operates over UDP only—so overzealous firewalls that won't allow WireGuard connections won't allow Nebula either. Click to expand... Also, smart asshole administrators ...
Ars Technica

Nebula VPN routes between hosts privately, flexibly, and efficiently

i'm not sure i get how Nebula can be used without point to point UDP capability, or how funneling all traffic through the lighthouse fixes that.... unless, i guess, you set up a separate TCP-based VPN ...