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Plain-language guides to online privacy and VPN technology, plus updates from VPNRice.

Linux eBPF XDP_REDIRECT: devmap and cpumap for Line-Rate VPN Gateways

Technical deep-dive into eBPF XDP_REDIRECT, devmap, and cpumap. Learn how driver-level packet redirection enables wire-speed forwarding for modern VPN gateways.

November 13, 2026 · 5 min read

Performance
Linux Foo-over-UDP and GUE RFC 8150: Line-Rate UDP Encapsulation for VPN Overlays
November 13, 2026 · 7 min read
Performance
Linux kTLS and Hardware Crypto Offload: Zero-Copy VPN Relay Architecture
November 13, 2026 · 6 min read
Performance
Linux Page Pool: Driver-Level Memory Recycling for High-Rate VPN Gateways
November 13, 2026 · 6 min read
Performance
Linux RPS and RFS: Multi-Core Packet Steering for High-Throughput VPN Gateways
November 13, 2026 · 6 min read
Security
Linux VRF and l3mdev: Route Table Isolation and Zero-Leak VPN Gateways
November 13, 2026 · 6 min read
Performance
Linux XFRM Interfaces and Hardware Crypto Offload for High-Speed VPN Gateways
November 13, 2026 · 6 min read
Security
Oblivious HTTP RFC 9458: Decoupling Identity and Data in Modern Privacy Architecture
November 13, 2026 · 6 min read
Security
Privacy Pass RFC 9505: How Blind Signatures and PAT Eliminate VPN CAPTCHAs
November 13, 2026 · 6 min read
Security
RFC 9462 DDR and RFC 9463 DNR: Upgrading Encrypted DNS on VPN Gateways
November 13, 2026 · 6 min read