Security firm Corero observed an LDAP attack that enabled cybercriminals to significantly amplify malicious distributed denial-of-service (DDoS) traffic and easily take down websites. Firewalls are often configured to leave port 389 open, allowing connectionless LDAP-based data communication. Even worse, experts warned that, combined with an Internet of Things (IoT-based) effort, these attacks could reach unprecedented bandwidth levels The solution to this problem comes in two parts: companies need to check their firewall settings and make sure port 389 is never left open.”]
Source: https://securityintelligence.com/news/new-ldap-attack-magnifies-malicious-traffic-fuels-iot-worries/