August 2020
Beginner
328 pages
8h 21m
English
Content preview from Ubuntu 20.04 Essentials
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18. Configuring SSH Key-based Authentication on Ubuntu
When an Ubuntu system is first installed, it is not configured by default to allow remote command-line access via Secure Shell (SSH) connections. When installed, SSH provides password protected and encrypted access to the system for the root account and any other users added during the installation phase. This level of security is far from adequate and should be upgraded to SSH key-based authentication as soon as possible.
This chapter will outline the steps to increase the security of an Ubuntu system by implementing key-based SSH authentication.
18.1 An Overview of Secure Shell (SSH)
SSH is designed to allow secure remote access to systems for the purposes of gaining shell access and transferring ...