--- title: "Rayan Crasta (@rayancrasta) | Hashnode" description: "Software Engineering and Distributed Systems. Read the latest articles by Rayan Crasta on Hashnode." url: "https://hashnode.com/@rayancrasta" --- @rayancrasta # Rayan Crasta @rayancrasta · United Kingdom · Joined July 2022 Software Engineering and Distributed Systems ### [SSH certificates in Linux - Step by Step Guide](https://rayancrasta.hashnode.dev/ssh-certificates-linux-step-by-step-guide?utm_source=hashnode&utm_medium=feed) Step by Step guide to implementing SSH certificate-based authentication 5 min read · [rayancrasta.hashnode.dev](https://rayancrasta.hashnode.dev/ssh-certificates-linux-step-by-step-guide?utm_source=hashnode&utm_medium=feed) [Oct 30, 2022](https://hashnode.com/posts/ssh-certificates-linux-step-by-step-guide/635ebfbb6246fc097747f719) ### [SSH certificate authentication - Better than keys?](https://rayancrasta.hashnode.dev/ssh-certificates-concepts?utm_source=hashnode&utm_medium=feed) We generally use either login credentials or SSH public-private key pair to login to Linux servers via SSH. However, both of them have their flaws. This made me wonder if there was a better way to authenticate users and hosts(servers):? I came across... 3 min read · [rayancrasta.hashnode.dev](https://rayancrasta.hashnode.dev/ssh-certificates-concepts?utm_source=hashnode&utm_medium=feed) [Oct 30, 2022](https://hashnode.com/posts/ssh-certificates-concepts/635ebf076246fc097747f717) ### [SFTP Setup using Password and Key based 2FA Authentication](https://rayancrasta.hashnode.dev/sftp-setup-using-password-and-key-based-2fa-authentication?utm_source=hashnode&utm_medium=feed) If you ever needed to use password and key based authentication to enable a 2FA type mechanism to increase security, this blog is for you. OS used here is CentOS Linux , so lets get started! Check SSH SFTP unlike FTP doesn’t required additional packa... 4 min read · [rayancrasta.hashnode.dev](https://rayancrasta.hashnode.dev/sftp-setup-using-password-and-key-based-2fa-authentication?utm_source=hashnode&utm_medium=feed) [Jun 1, 2022](https://hashnode.com/posts/sftp-setup-using-password-and-key-based-2fa-authentication/6349abff9d3b6d3878ce1f0a) ### [Linux SSH Key + Password Auth for Users Stored in Active Directory](https://rayancrasta.hashnode.dev/linux-ssh-key-password-auth-for-users-stored-in-active-directory?utm_source=hashnode&utm_medium=feed) In this blog we setup SSH with key and password authentication to achieve a 2FA type mechanism for more security for users stored in Active Directory. The SSH public key and the password of the user will be stored in the active directory as well. OS ... 4 min read · [rayancrasta.hashnode.dev](https://rayancrasta.hashnode.dev/linux-ssh-key-password-auth-for-users-stored-in-active-directory?utm_source=hashnode&utm_medium=feed) [Jun 1, 2022](https://hashnode.com/posts/linux-ssh-key-password-auth-for-users-stored-in-active-directory/6349ab9d9d3b6d3878ce1f08)