Comprehensive Overview of Public Key Authentication in SSH

This video provides a comprehensive overview of SSH (Secure Shell), a protocol used to establish secure connections between computers. The video explains the importance of SSH in modern networking, where secure remote access and file transfers are crucial. It dives into the fundamental concepts of public key cryptography, including RSA and ECDSA algorithms, and discusses their strengths and weaknesses. The video explores how SSH leverages public key pairs for passwordless authentication, providing a more secure alternative to traditional password-based logins. The presenter then details the authentication process between a client and server using public keys, emphasizing the importance of security and integrity. The video concludes with an explanation of how PAM (Pluggable Authentication Modules) can be used for identity access management and authorization, ensuring a more controlled and secure environment.