SSH, the Secure Shell/Installation

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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.


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


OpenSSH depends on the following:

  • OpenSSL
  • zlib

Installation from a package[edit]

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

Debian based systems[edit]

The whole suite[edit]

apt-get install ssh

The client and server can be installed separately[edit]

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


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[edit]

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

Via packages[edit]

pkg_add -r openssh


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


PuTTY is a SSH client for the Windows family of operating systems. No installation is needed, simply download the appropriate binary from