https://netacoding.com/tags/4-tuple/ Recent content in 4-Tuple on Netacoding | Cybersecurity, Assembly & Network Research https://netacoding.com/img/logo-netacoding.png https://netacoding.com/img/logo-netacoding.png Hugo en-us Mon, 11 May 2026 00:00:00 +0000 https://netacoding.com/posts/tcp-state-exhaustion/ Mon, 11 May 2026 00:00:00 +0000 https://netacoding.com/posts/tcp-state-exhaustion/ TCP connection capacity is bounded by 4-tuple uniqueness and kernel conntrack table size — not port numbers. Covers TIME_WAIT socket exhaustion, Sockstress (window=0 + Persist Timer loop, 2008), Slowloris-class L7 variants, ip_conntrack_max limits, and net.ipv4.tcp_tw_reuse/tcp_fin_timeout tuning for defense.