What is the default RADIUS port used in network security?

The default RADIUS port used in network security is 1812. This port is designated for RADIUS authentication, which is a widely used protocol for remote user authentication and accounting. RADIUS, which stands for Remote Authentication Dial-In User Service, facilitates secure communication between the user’s device and the network by enabling centralized authentication, authorization, and accounting.

Using port 1812 allows RADIUS servers to receive authentication requests from clients. It is critical for organizations to configure their network devices and firewalls to allow traffic through this specific port to ensure that user authentication processes can occur smoothly. Other ports mentioned, such as 8080, 1453, and 3389, are associated with different services and protocols that do not pertain to RADIUS functionality in network security.