Scaling Zero Trust Tunneling for Edge Cloud (8603)
Technical Overview
Zero Trust tunneling at the edge demands deterministic latency, hardware‑rooted attestation, and stateless packet processing on bare‑metal nodes. This article walks through the kernel‑level tuning, eBPF‑based policy enforcement, and the control‑plane architecture that lets Votion Cloud push >1.2 M concurrent tunnels per rack while keeping tail latency < 2 ms.
Key Challenges
- Kernel bypass vs. full‑stack TCP termination
- Dynamic key rotation without session disruption
- Telemetry collection at line rate
eBPF/XDP kernel filter evaluates TCP/UDP frames directly on server NIC.