Ssh

Today I learned how to SSH into a server and an Optical Line Terminal (OLT). This is a fundamental skill for remote server administration and network management.

Basic SSH Command

The basic syntax for SSH is surprisingly simple:

ssh username@hostname

For example:

ssh admin@192.168.1.100

SSH Authentication Methods

I learned there are two main ways to authenticate:

1. Password Authentication: Simply enter your password when prompted
2. Key-Based Authentication: More secure, uses a public/private key pair

Setting Up Key-Based Authentication

To set up key-based authentication: