X11 forwarding allows you to securely run graphical applications on a server and have the graphical output displayed on your local machine (client). This is particularly useful when you need to run GUI-based applications on a server or remote machine but want to interact with them using your local graphical environment.

SSH, or Secure Shell, is a widely used protocol for secure remote access to systems. However, when attempting to connect to a server using SSH, you may encounter a “permission denied (publickey)” error. This guide will help you troubleshoot and resolve this issue.

SSH tunneling is a technique used to enhance security by establishing encrypted connections between local and remote systems, facilitating secure data transfer and access to remote resources. There are several types of SSH tunneling, each serving different purposes:

enhances security using cryptographic keys instead of passwords for accessing remote systems, ensuring a more secure and efficient login process.