What are the main protocols used for remote access to remote servers?

The following protocols are most commonly used for remote server access:

• SSH (Secure Shell) — the most common protocol for secure remote management and command transmission over an encrypted channel.
• RDP (Remote Desktop Protocol) — a protocol for remote access to the graphical interface of Windows servers.
• Telnet — an outdated protocol for remote access, which does not provide encryption and is now rarely used.
• VNC (Virtual Network Computing) — a protocol for remote management of graphical interfaces, often used in Linux environments.

In practice, SSH is the standard for secure remote access to Unix-like systems.