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Execute commands simultaneously on multiple servers Using PSSH/Cluster SSH/Multixterm -- Ubuntu Geek

by camel
If you have multiple servers with similar or identical configurations (such as nodes in a cluster), it’s often difficult to make sure the contents and configuration of those servers are identical. It’s even more difficult when you need to make configuration modifications from the command line, knowing you’ll have to execute the exact same command on a large number of systems . In this tutorial we will see some tools to execute one command on multiple remote servers using ssh.First you need to make sure you have ssh installed in your machine or you can install using the following command

Make SSH connections with PHP

by lecyborg & 3 others
Not everyone knows about PHP's capabilities of making SSH connections and executing remote commands, but it can be very useful. I've been using it a lot in PHP CLI applications that I run from cronjobs, but initially it was a pain to get it to work. The PHP manual on Secure Shell2 Functions is not very practice or thorough for that matter, so I would like to share my knowledge in this how to, to make it a little less time consuming setting this up. In this article I'm going to assume that: * You're running Debian / Ubuntu If not, you will have to substitute the package manager aptitude with whatever your distribution provides * You're running PHP 5 If not, just replace php5 with php4 everywhere * You have basic knowledge of PHP & server administration * You already have PHP installed


SSH Port Forwarding

by lecyborg
SSH also has a wonderful feature called SSH Port Forwarding, sometimes called SSH Tunneling, which allows you to establish a secure SSH session and then tunnel arbitrary TCP connections through it. Tunnels can be created at any time, with almost no effort and no programming, which makes them very appealing. In this article we look at SSH Port Forwarding in detail, as it is a very useful but often misunderstood technology. SSH Port Forwarding can be used for secure communications in a myriad of different ways. Let's start with an example.

Chrooted SSH/SFTP Tutorial (Debian Etch) | HowtoForge - Linux Howtos and Tutorials

by camel
This tutorial describes two ways how to give users chrooted SSH access. With this setup, you can give your users shell access without having to fear that they can see your whole system. Your users will be jailed in a specific directory which they will not be able to break out of. The users will also be able to use SFTP in their chroot jails.

SÉCURITÉ Ssh sans mot de passe

by lecyborg
Ou comment se connecter à une machine distante sans avoir à rentrer son mot de passe. Il existe une méthode de configuration plus rapide. Vous pouvez en une seule commande ajouter votre clé dans le fichier `authorized_keys` du serveur distant grâce à `ssh-copy-id`. Pour cela procédez comme suit :

Configuring PuTTY

by lecyborg & 1 other
Un bon tutorial sur la configuration du client ssh Putty


Complete Debian Linux Server Setup Tutorial

by david23 & 4 others
This is atep by step tutorials how to setup Debian server this includes Debian Installation FTP Server Setup in debian Webserver Setup in Debian Samba Server Setup in Debian Database Server Setup in Debian Time clock sync for debian server Mail Server Configuration in Debian VNC Server setup in Debian Proxy Server Setup in Debian SSH Server Setup in Debian tftp Server Setup in Debian DHCP Server Setup in Debian IPtables Configuration in Debian DNS Server Setup in debian


Automated Backups With rdiff-backup | HowtoForge - Linux Howtos and Tutorials

by camel & 1 other (via)
This tutorial describes how to do automated server backups with the tool rdiff-backup. rdiff-backup lets you make backups over a network using SSH so that the data transfer is encrypted. The use of SSH makes rdiff-backup very secure because noone can read the data that is being transferred. rdiff-backup makes incremental backups, thus saving bandwidth.

Breaking Firewalls with OpenSSH and PuTTY

by Riduidel & 1 other
This article shows how remote Linux and Windows users can gain access to firewalled samba, mail, and http servers.

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