DNS. LSBInitScripts. Translation(s): none A status page for dependency based boot sequencing is available.
This is a short documentation about how to make an Init Script LSB (Linux Standard Base)-compliant based on the Chapter 20 of the LSB 3.1. LSB-compliant init scripts need to: provide, at least, the following actions: start, stop, restart, force-reload, and status. All of those, except for status, are required by the Debian Policy, chapter 9.3.2 Writing the scripts. And should also follow Debian Policy, chapter 9.4 Console messages from init.d scripts) Full information on the actions (and return codes) that LSB scripts have to honor are available at LSB 3.1, Chapter 20.2. Nmap - Free Security Scanner For Network Exploration & Security. Nmap tutoriel « Kediad. ICMP types ! Format de la commande "time"
Databases. Webcam Bot ! Assistance. Debian and its support are run by a community of volunteers.
If this community-driven support doesn't fulfil your needs, you may read our documentation or hire a consultant. On-line Real Time Help Using IRC IRC (Internet Relay Chat) is a way to chat with people from all over the world in real time. IRC channels dedicated to Debian can be found on OFTC. To connect, you need an IRC client. Once you have the client installed, you need to tell it to connect to the server.
HTTP performance testing with httperf, autobench and openload. Update 02/26/07--------The link to the old httperf page wasn't working anymore.
I updated it and pointed it to the new page at HP. Here's a link to a PDF version of a paper on httperf written by David Mosberger and Tai Jin: "httperf -- a tool for measuring Web server performance". Also, openload is now OpenWebLoad, and I updated the link to its new home page.-------- In this post, I'll show how I conducted a series of performance tests against a Web site, with the goal of estimating how many concurrent users it can support and what the response time is. Httperf is a benchmarking tool that measures the HTTP request throughput of a web server. I won't go into details about installing httperf, autobench and openload, since the installation process is standard (configure/make/make install or rpm -i).
Debugging Tip: Trace the Process and See What It is Doing with s. Strace is a useful diagnostic, instructional, and debugging tool.
It can save lots of headache. System administrators, diagnosticians and trouble-shooters will find it invaluable for solving problems with programs for which the source is not readily available since they do not need to be recompiled in order to trace them. This is also useful to submit bug reports to open source developers. 20 Linux System Monitoring Tools Every SysAdmin Should Know. Need to monitor Linux server performance?
Try these built-in commands 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: 20 Linux Server Hardening Security Tips. 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. Linux Server Hardening Checklist and Tips The following instructions assume that you are using CentOS/RHEL or Ubuntu/Debian based Linux distribution.
Mes manuels. VSFTPD. Serveur IRC (hybrid-ircd + hybserv) TeamSpeak. Tomcat 6. Debian 5. NFS. Divers. Langage ANT(pdf) ParaVM or full-VM or Cloud ? Xen. Mozilla Firefox. Low Power Servers. Remote Administration with DSH. Discover dsh, a utility to run arbitrary commands on any number of remote machines.
Previous “Tech Support” columns introduced both Perlbal and Pound, two packages to load balance traffic across multiple machines. Dividing load among several servers provides better performance and increased reliability. However, more machines translates to more tedium. Previously simple actions — such as restarting a service — becomes complex. There are multiple solutions to managing a collection of machines. Dsh is provided under the terms of the GNU Public License and can be downloaded from the dsh home page at Before you install, download, build, and install libdshconfig, which is also available from the dsh home page. To build and install dsh, run the standard commands: $ . dsh has three system-wide configuration files, and you can extend those with personal settings. Exploitation.
KeepAlived - HowTo. Virtual thumbshoter.