Logs on a public-facing Linux server show thousands of SSH password guesses every day. Which change most improves the security of SSH logins?
Les journaux d'un serveur Linux exposé sur Internet montrent chaque jour des milliers de tentatives de mots de passe SSH. Quel changement améliore le plus la sécurité des connexions SSH ?
Answers
AAllow direct logins as root so that attacks are easier to noticeAutoriser les connexions directes en root pour mieux repérer les attaques
BUse key-based authentication and disable password loginsUtiliser l'authentification par clé et désactiver les connexions par mot de passe
CSwitch to Telnet, which attackers scan less oftenPasser à Telnet, que les attaquants analysent moins souvent
DIncrease the number of allowed password attemptsAugmenter le nombre de tentatives de mot de passe autorisées
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