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 Standards 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) Nmap - Free Security Scanner For Network Exploration & Security.
J'adore nmap, plus je l'utilise et plus je me dis que c'est un vilain outil pour les méchants pirates – uglycharly
Nmap tutoriel « Kediad.
C'est une science, le tuto est un peu simple ! Cela dit, je crois que dans "Matrix" ils utilisent nmap : Très bon outil pour pénétrer la matrice ! – uglycharly
Ce bon vieux nmap cé toute ma jeunesse :)) ! – deepy
ICMP types ! Format de la commande "time"
Databases. Webcam Bot ! Assistance. Documentation Before searching for support from someone else, it's usually good to try to find an answer to your problem yourself.
That way you will usually get the answers you need, and even if you don't, the experience of reading the documentation will likely be useful for you in the future. There is a fair amount of documentation available in Debian — please refer to the Debian documentation web page. Known problems Limitations and severe problems of the current stable distribution (if any) are described on the release pages.
Pay particular attention to the release notes and the errata. Wiki Solutions to common problems, howto's, guides, tips and other documentation can be found at the Debian Wiki. Mailing lists Debian is developed through distributed development all around the world. 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". 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. Each line in the trace contains the system call name, followed by its arguments in parentheses and its return value.
Run strace against /bin/foo and capture its output to a text file in output.txt: $ strace -o output.txt /bin/foo You can strace the webserver process and see what it's doing. 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. Serveurs. 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.
KeepAlived - HowTo. Virtual thumbshoter.