Hello, you are using an old browser that's unsafe and no longer supported. Please consider updating your browser to a newer version, or downloading a modern browser.
Training Camp • Cybersecurity Glossary
Port Knocking is a security technique used to secure network access by requiring a series of connection attempts to predefined ports in a specific sequence before allowing access to a service.
Port Knocking Definition: Port Knocking is a security technique used to secure network access by requiring a series of connection attempts to predefined ports in a specific sequence before allowing access to a service.
Port knocking is a security measure used to protect network services by making them accessible only to users who know the specified sequence of "knocks" or connection attempts on a set of pre-defined ports. Once the correct sequence is detected, the firewall dynamically opens the port to allow the requested service to establish a connection. This technique adds an additional layer of security by hiding open ports from potential attackers and reducing the likelihood of unauthorized access.
Turn knowledge into credentials. Browse our instructor-led cybersecurity courses.
View All Courses →