https://techdoku.nogafam.es/ 2026-05-25T17:24:34+00:00 https://techdoku.nogafam.es/ https://techdoku.nogafam.es/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2020-04-04T14:00:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://techdoku.nogafam.es/doku.php?id=docu:csheet:net:firewall:syn_flooding&rev=1586008813&do=diff Protect your *nix server from SYN flooding This are some basic anti-script-kiddie sysctl configurations to protect your server from SYN flooding net.ipv4.conf.default.rp_filter=1 net.ipv4.conf.all.rp_filter=1 net.ipv4.tcp_syncookies=1 net.ipv4.tcp_max_syn_backlog=2048 net.ipv4.tcp_synack_retries=3