OpenSSH, the de facto open source SSH application, encrypts all traffic (including passwords) to effectively eliminate these risks. Additionally, OpenSSH provides a myriad of secure tunneling capabilities, as well as a variety of authentication methods.

OpenSSH is the port of OpenBSD's excellent OpenSSH[0] to Linux and other versions of Unix. OpenSSH is based on the last free version of Tatu Ylonen's sample implementation with all patent-encumbered algorithms removed (to external libraries), all known security bugs fixed, new features reintroduced and many other clean-ups. http://www.openssh.com/ The only changes in the SSH implementation are:

PAM support

EGD[1]/PRNGD[2] support and replacements for OpenBSD library functions that are absent from other versions of UNIX

The config files are now in /etc/config. e.g.

o/etc/config/sshd_config instead of /etc/sshd_config o /etc/config/ssh_config instead of /etc/ssh_config

o /etc/config/users/<username>/.ssh/ instead of /home/<username>/.ssh/

Generating Public Keys (Linux)

To generate new SSH key pairs, use the Linux ssh-keygencommand. This will produce an RSA or DSA public/private key pair and you will be prompted for a path to store the two key files e.g. id_dsa.pub (the public key) and id_dsa (the private key). For example:

$ ssh-keygen -t [rsadsa]

Generating public/private [rsadsa] key pair.

Enter file in which to save the key (/home/user/.ssh/id_[rsadsa]):

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /home/user/.ssh/id_[rsadsa]. Your public key has been saved in /home/user/.ssh/id_[rsadsa].pub. The key fingerprint is: 28:aa:29:38:ba:40:f4:11:5e:3f:d4:fa:e5:36:14:d6 user@server

$

It is advisable to create a new directory to store your generated keys. It is also possible to name the files after the device they will be used for. For example:

$ mkdir keys

$ ssh-keygen -t rsa

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Tripp Lite B096-016, 93-2879, B096-048 owner manual Generating Public Keys Linux, $ ssh-keygen -t rsadsa

93-2879, B096-016, B096-048 specifications

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