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Oracle Linux: How to Configure Passwordless SSH Login Using PKI Authentication (Doc ID 2200210.1)

Last updated on FEBRUARY 16, 2023

Applies to:

Linux OS - Version Oracle Linux 6.0 and later
Oracle Cloud Infrastructure - Version N/A and later
Linux x86-64
Linux x86

Goal

Oracle Linux (OL) supports Secure Shell (SSH) access using password and Public Key Infrastructure (PKI) public/private key based authentication.
For security reasons, System Administrators may wish to configure systems to solely utilise SSH public / private keys.
This document describes how to configure SSH PKI key based authentication on Oracle Linux.

Solution

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In this Document
Goal
Solution
 1. Login to client system
 2. Create user's SSH public / private key pair
 3. Verify user's private key file permissions
 4. Copy user's public key to target system
 5. Test user SSH PKI-based login

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