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Fedora Draft Documentation

OpenSSH Guide

Using and configuring OpenSSH on Fedora

Edition 15.0.2

Scott Radvan

Red Hat Engineering Content Services

Eric Christensen

Fedora Documentation Project

Legal Notice

Copyright © 2010 Red Hat, Inc.
The text of and illustrations in this document are licensed by Red Hat under a Creative Commons Attribution–Share Alike 3.0 Unported license ("CC-BY-SA"). An explanation of CC-BY-SA is available at The original authors of this document, and Red Hat, designate the Fedora Project as the "Attribution Party" for purposes of CC-BY-SA. In accordance with CC-BY-SA, if you distribute this document or an adaptation of it, you must provide the URL for the original version.
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The Fedora OpenSSH Guide assists both new and experienced users to understand, use, configure, and secure the OpenSSH implementation of SSH (Secure Shell) in Fedora.

1. Document Conventions
1.1. Typographic Conventions
1.2. Pull-quote Conventions
1.3. Notes and Warnings
2. We Need Feedback!
1. Introduction
1.1. What is SSH?
1.2. What is OpenSSH?
1.3. How do I get it?
1.4. Why use it?
1.5. License
2. OpenSSH Features
2.1. Current Features
2.2. The OpenSSH suite
3. Security
3.1. Benefits
3.2. SSH Vs. Telnet
4. Client Use
4.1. Config File
4.2. Connection Theory
4.3. Connection Example
5. Server Use
5.1. Server Config
5.2. Cryptographic Logon
6. Troubleshooting
6.1. Techniques
A. Revision History