Secure Remote Access:
SSH allows users to securely access remote systems over an unsecured network, such as the internet, by encrypting the communication between the client and server.
Authentication:
SSH provides various methods for user authentication, including password-based authentication, public key authentication, and multi-factor authentication, ensuring secure access to systems.
Encryption:
SSH encrypts all data transmitted between the client and server, including login credentials, commands, and data exchanged during interactive sessions, protecting against eavesdropping and interception.
Key Exchange:
SSH utilizes cryptographic algorithms and key exchange protocols, such as Diffie-Hellman key exchange, to establish a secure connection between the client and server and to negotiate session encryption keys.
Port Forwarding:
SSH supports port forwarding, also known as SSH tunneling, allowing users to securely tunnel network traffic between local and remote hosts, enabling secure access to services and resources behind firewalls and NAT devices.
File Transfer:
SSH includes utilities like scp (secure copy) and sftp (secure file transfer protocol) for secure file transfer between systems, providing confidentiality and integrity protection for transferred files.
Remote Command Execution:
SSH enables users to execute commands and run scripts on remote systems securely, facilitating remote administration, troubleshooting, and automation tasks.
Configuration:
SSH server and client configurations allow administrators to customize SSH behavior, including authentication methods, encryption algorithms, access controls, and logging settings, to meet security and compliance requirements.
Public Key Infrastructure (PKI):
SSH supports the use of public key cryptography for authentication, allowing users to generate key pairs (public and private keys) and securely store and manage their keys for authentication purposes.
Audit and Logging:
SSH servers can log authentication attempts, session activities, and administrative actions for auditing and compliance purposes, providing visibility into SSH usage and security events.
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