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1. How to configure the Centos such that it always need to check for the private key for user access without inputing any password directly ?<br />
<br />
2. How to configure the Centos such that it always need to check for the private key + password before accessing the Centos ?<br />
<br />
Thanks
</div>
</div>


1. How to configure the Centos such that it always need to check for the private key for user access without inputing any password directly ?

2. How to configure the Centos such that it always need to check for the private key + password before accessing the Centos ?

Thanks

Setup Putty SSH

Telnet is an application layer protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. SSH was designed as a replacement for Telnet and for unsecured remote shell protocols. The term telnet is also used to refer to the software that implements the client part of the protocol. SSH provides a secure channel over an unsecured network in a client-server architecture, connecting an SSH client application with an SSH server.

SSH / Telnet Software

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.