dear sir/madam i was working as devops/sre/cloud enggineer for many year and duo 2fa was become my 2fa for any server i deploy at least 100+ server was deployment and i will create documentation every job i done .I have extensive experience with Redhat, server setups, and DUO Multi-Factor Authentication, making me the ideal candidate for your project. I understand the nuances of SSH implementation and can guarantee you a seamless integration. With my technical expertise, I can ensure that your server is set up using the Redhat 9.3 OS to run the DUO Multi-Factor Authentication application flawlessly.
Moreover, I'm incredibly skilled in ensuring system-wide security measures which includes the replacement of public key auth that you explicitly mentioned not using. As a Linux engineer by profession, not only am I proficient with RedHat but also with other distributions such as Ubuntu, Debian, and Oracle Linux. This diversity in my skill set helps me think outside of the box and craft unique solutions that are best suited to your specific needs.
Lastly, I pride myself on my meticulous approach to security. I will not only set up the DUO server as desired but also
provide you with a comprehensive walkthrough of the installation process for educational purposes. This will empower you to manage the system yourself with confidence in the future. You can trust me for a fast, efficient, and robust setup. Contact me now for a project that's tailor-made for success!