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PUBLIC MARKS from dzc with tags ssh & firewall

by 1 other

regle IpTables pour bloquer les attaques par dictionnaire sur un port (par exemple le port SSH)

a plus de 4 tentatives de connexions en moins d'une minute, on bloque l'ip pendant une minute.

"port knocking is a method of externally opening ports on a firewall by generating a connection attempt on a set of prespecified closed ports"

1 (3 marks)