Linux
Get flash to fully experience Pearltrees
Linux (Ubuntu) Desktop
supervision
DNS & LoadBalancing
Nmap - Free Security Scanner For Network Exploration & Security
Urgent notice [March 29, 2012]: Students: Want to gain valuable experience this summer writing real code for Nmap and earn a $5,000 stipend? You have until Friday, April 6 to apply for the Nmap/Google Summer of Code ! Previous SoC students brought us the Nmap Scripting Engine , Ncat , and the Zenmap GUI ! Non-students: Please forward the link to any college/grad students you know. Thanks!
This document very briefly discusses installing and configuring Keepalived and Linux Virtual Server (LVS) on Linux for the purpose of providing load balancing of a service across multiple hosts. Linux Virtual Server is a function of the Linux kernel which allows for the expedient forwarding of connections to multiple servers on a network. Keepalived is a userspace daemon which wraps the LVS interface (ipvsadm) and provides for rapid and transparent failover of multiple virtual hosts (hosts forwarding connections to real hosts) and multiple real hosts (hosts accepting connections and providing services). The purpose of using LVS is to divide processing load across multiple servers for best performance.
KeepAlived - HowTo
The basics for any network based on *nix hosts is the Transport Control Protocol/ Internet Protocol (TCP/IP) combination of three protocols. This combination consists of the Internet Protocol (IP),Transport Control Protocol (TCP), and Universal Datagram Protocol (UDP). By Default most of the users configure their network card during the installation of Ubuntu. You can however, use the ifconfig command at the shell prompt or Ubuntu’s graphical network configuration tools, such as network-admin, to edit your system’s network device information or to add or remove network devices on your system Configure Network Interface Using Command-Line
Ubuntu Networking Configuration Using Command Line | Ubuntu Geek
Serveur IRC (hybrid-ircd + hybserv)
SSH derrière un proxy SOCKS - Blog de Pingoomax
L'avantage de cette solution, c'est que non seulement elle vous évite la compilation (vu la taille du fichier, ca n'est pas vraiment un argument), mais en plus le paquet contient une page de man et un patch. Appliquer une modification dans le premier fichier nécessite les droits root, et est applicable à tous les utilisateurs du système. La seconde se fait avec les droits utilisateur et n'est valable que pour cet utilisateur.This server could not verify that you are authorized to access the document requested. Either you supplied the wrong credentials (e.g., bad password), or your browser doesn't understand how to supply the credentials required.
configurer et utiliser le ssh
Securing your Linux server is important to protect your data, intellectual property, and time, from the hands of crackers (hackers). The system administrator is responsible for security Linux box. In this first part of a Linux server security series, I will provide 20 hardening tips for default installation of Linux system. #1: Encrypt Data Communication All data transmitted over a network is open to monitoring.
20 Linux Server Hardening Security Tips
20 Linux System Monitoring Tools Every SysAdmin Should Know
Need to monitor Linux server performance? Try these built-in command and a few add-on tools. Most Linux distributions are equipped with tons of monitoring. These tools provide metrics which can be used to get information about system activities. You can use these tools to find the possible causes of a performance problem. The commands discussed below are some of the most basic commands when it comes to system analysis and debugging server issues such as:
blender
