SSH, the Secure Shell/Installation

Installation

There are two ways to install software. You can compile it from sources, which will give you access to compile-time options, or install it from a package.

Compilation

We will concentrate on the OpenSSH suite, because it is free, open source and popular. Sources can be obtained from www.openssh.org

Requirements

OpenSSH depends on the following:

• OpenSSL
• zlib

Installation from a package

Depending on your operating system, there are various ways one can install software.

Debian based systems

The whole suite

apt-get install ssh

The client and server can be installed separately

apt-get install openssh-client
apt-get install openssh-server

FreeBSD

In most cases, you already have SSH installed on your FreeBSD system. Check by typing

which ssh

If, in return, you get something like "Command not found" you have to install SSH. We will install OpenSSH. To do it, simply type the following. Note, that other implementations of SSH (like SSH and SSH2) are also available.

Via ports

cd /usr/ports/security/openssh && make install clean

Via packages

pkg_add -r openssh

OpenBSD

Since OpenSSH is developed by the OpenBSD project, binaries should be included in the base system.

Windows

PuTTY is a SSH client for the Windows family of operating systems. No installation is needed, simply download the appropriate binary from http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html