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

Linux TCP_NOTSENT_LOWAT: Eliminating Bufferbloat and Latency in VPN Proxies

Explore how Linux TCP_NOTSENT_LOWAT controls socket write queues, prevents kernel bufferbloat, and minimizes tail latency for high-throughput 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 Threaded NAPI: Eliminating Softirq Starvation in VPN Gateways
November 14, 2026 · 5 min read
Performance
Linux eBPF XDP: Line-Rate VPN Encapsulation via bpf_xdp_adjust_head
November 14, 2026 · 6 min read
Performance
Linux IP_BIND_ADDRESS_NO_PORT: Eliminating Port Exhaustion in VPN Gateways
November 14, 2026 · 5 min read
Security
Linux Conntrack Helpers: Defending VPNs Against NAT Slipstreaming
November 14, 2026 · 7 min read