Tripp Lite B092-016 Owner's Manual download pdf (Page 195)

195

OpenSSH, the de facto open source SSH application, encrypts all traffic (including passwords) to

effectively eliminate these risks. Additio

nally, 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 o

nly

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.

/etc/config/sshd_config

instead of

etc/sshd_config

/etc/config/ssh_config

instead of

/etc/ssh_config

/etc/config/users/<username>/.ssh

/ instead of

/home/<username>/.ssh/

15.6.2

Generating Public Keys

(

Linux

)

To generate new SSH key pairs

use the

Linux

ssh

keygen

command. This will

produ

ce a

n RSA or

DSA public/private key pair

and

you

will

prompt

ed 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 [rsa|dsa]

Generating public/private [rsa|dsa] key pair.

ter file in which to save the key

(/home/user/.ssh/id_[rsa|dsa]):

Enter

passphrase

(empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in

/home/user/.ssh/id_[rsa|dsa].

Your public key has been saved in

/home/user/.ss

h/id_[rsa|dsa].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 fo

For example:

$ mkdir keys

$ ssh

keygen

t rsa

Generating public/private rsa key pair.

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