How to SSH to a Linux Server
SSH is a cryptographic network protocol for operating network services securely over an unsecured network. This tutorial shows how to SSH to a Linux server via Putty.exe.
2 Open the Putty.exe
3 Enter the Server IP (Host Name (or IP address)) and Port number (if it’s not the default 22), then Click Open
4 Click on Yes
5 Enter Username and Password
User name: administrator (for Ubuntu) or root (for CentOS)