He kept SoftEther for the offshore dev team, who needed to slip through China’s Great Firewall at 3 AM without leaving a trace.

The logs unfurled like poetry: TLS Error: TLS handshake failed Floating point exception (core dumped) Leo sighed. OpenVPN demanded ritual. Correct ports, precise certificates, and a prayer to the MTU gods. When it worked, it was a fortress. When it didn’t, it was a brick wall you had to climb with tweezers.

Within seconds, it had negotiated a fake HTTPS session, cloaked the L2TP packet inside a TLS sandwich, and tricked the corporate proxy into thinking it was just another web request.

He launched the client: ./vpncmd

SoftEther was the strange traveler who showed up at the dock with a Swiss army knife and a grin. Leo had compiled it from source on a Tuesday just to see if the legend was true—that it could clone any protocol, punch through any firewall, and run faster than sanity allowed.

OpenVPN was the veteran. Leo respected it. It was the leather-bound journal of VPNs—verbose, exacting, and stubborn. He’d spent the morning hand-editing .ovpn files, wrestling with HMAC firewalls, and triple-checking that the TLS handshake didn’t collapse under its own weight.