Are you familiar with Kerberos? Where is it used?

Kerberos is a network authentication protocol based on the use of tickets to securely verify the identity of users and services on a network. It prevents the transmission of passwords over the network and protects against replay attacks.

Main features:

• Uses a centralized authentication server (KDC).
• Clients receive a ticket, which they present to services for access.
• Widely used in corporate networks, for example, in Microsoft Active Directory.

Applications:

• In single sign-on (SSO) systems.
• In large organizations for secure resource access.
• In Hadoop and other distributed systems for node authentication.

Thus, Kerberos provides a secure and convenient authentication mechanism in networks with many users and services.