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News and guides — Page 5 of 27

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

Protocols
TCP User Timeout (RFC 5482): Fast Dead Peer Detection and VPN Resilience
November 8, 2026 · 6 min read
Protocols
TCP Zero Window Probing and Persist Timer: Preventing VPN Buffer Exhaustion
November 8, 2026 · 6 min read
Privacy
DNS QNAME Minimisation RFC 9156: Stopping Metadata Leaks to Root & TLDs
November 7, 2026 · 8 min read
Protocols
IKEv2 Session Resumption RFC 5723: 1-RTT Reconnection & Stateless Ticket Defense
November 7, 2026 · 6 min read
Protocols
IKEv2 Redirect RFC 5685: Dynamic Gateway Load Balancing & Tunnel Re-Anchoring
November 7, 2026 · 6 min read
Protocols
BGP Large Communities RFC 8195: Anycast Traffic Engineering
November 7, 2026 · 8 min read
Protocols
DNS Cookies RFC 7873 and RFC 9018: Stateless Request Authentication and Anycast Defense
November 7, 2026 · 7 min read
Protocols
Happy Eyeballs v2 RFC 8305: Dual-Stack Connection Racing in VPNs
November 7, 2026 · 8 min read
Protocols
IKEv2 Fragmentation RFC 7383: Resolving IPsec Handshake Drops and MTU Black Holes
November 7, 2026 · 7 min read
Protocols
IKEv2 MOBIKE RFC 4555: Tunnel Mobility and Return Routability
November 7, 2026 · 8 min read