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

Linux TCP_DEFER_ACCEPT: Eliminating Idle Handshakes and Connection Floods in VPNs

Learn how Linux TCP_DEFER_ACCEPT delays socket wakeups until the first data payload arrives, saving CPU cycles and shielding VPN proxies from DoS floods.

November 15, 2026 · 6 min read

Performance
Linux SO_INCOMING_CPU & SO_INCOMING_NAPI_ID: Zero-IPC Cache Locality in Multi-Core VPNs
November 15, 2026 · 6 min read
Performance
Linux BPF Ring Buffer: High-Throughput Event Telemetry in VPN Gateways
November 15, 2026 · 6 min read
Performance
Linux TCP_NOTSENT_LOWAT: Eliminating Bufferbloat and Latency in VPN Proxies
November 15, 2026 · 6 min read
Performance
Linux TCP_REPAIR: Live Socket Migration and Hitless Restarts in VPN Proxies
November 15, 2026 · 6 min read
Performance
Linux IPVLAN vs MACVLAN: High-Throughput Isolation for VPN Gateways
November 15, 2026 · 6 min read
Performance
Linux XPS: Eliminating Tx Queue Lock Contention on VPN Gateways
November 15, 2026 · 6 min read
Performance
Linux TCP Fast Open: Eliminating Handshake Latency in VPN Gateways
November 15, 2026 · 7 min read
Performance
Linux IP Early Demux: Optimizing Routing Cache and Forwarding in VPN Gateways
November 15, 2026 · 5 min read
Performance
Linux TCP_CORK and MSG_MORE: Eliminating Tinygrams in VPN Tunnels
November 15, 2026 · 7 min read