18 commands to monitor network bandwidth on Linux server. Network monitoring on Linux This post mentions some linux command line tools that can be used to monitor the network usage. These tools monitor the traffic flowing through network interfaces and measure the speed at which data is currently being transferred. Incoming and outgoing traffic is shown separately. Some of the commands, show the bandwidth used by individual processes. This makes it easy to detect a process that is overusing network bandwidth. The tools have different mechanisms of generating the traffic report. Here is a list of the commands, sorted by their features. 1. 1. Nload is a commandline tool that allows users to monitor the incoming and outgoing traffic separately.
So if you just need to take a quick look at the total bandwidth usage without details of individual processes, then nload will be handy. $ nload Installing Nload - Fedora and Ubuntu have got it in the default repos. . # fedora or centos $ yum install nload -y # ubuntu/debian $ sudo apt-get install nload 2. iftop. Créer et Installer un certificat SSL sous NGinx | Admin Serveur. Créer et Installer un certificat SSL sous NGinx Installer un certificat SSL sur NGinx est l'affaire de quelques minutes.
Dans cet exemple, j'ai choisi NameCheap comme fournisseur de Certificat SSL. Les certificats SSL de type GeoTrust RapidSSL sont au prix de 10.95 USD (~7.95 €uros au moment de ce billet). Préparation des certificats SSL Rendez-vous sur votre serveur: cd /etc/nginx/ # Création d'un dossier ssl pour y mettre les certificats mkdir ssl cd ssl/ Génération des certificats: # Génération du fichier .key openssl genrsa -des3 -out admin-serv.net.key 2048 Generating RSA private key, 2048 bit long modulus ...+++ ..................................................................................................+++ e is 65537 (0x10001) Enter pass phrase for admin-serv.net.key: Verifying - Enter pass phrase for admin-serv.net.key: Votre fichier .key (protégé par mot de passe) est maintenant créé, nous passons à la génération du CSR: Votre fichier CSR est désormais créé.
Votre commentaire. Install and Config Fail2Ban in Debian 7 Wheezy. Fail2Ban (authentication failure monitor) is an intrusion prevention software, written in Python. Fail2Ban analyzes various services log files (ssh, apache, postfix etc) and if it detects possible attacks (mainly Brute-force attacks), it creates rules on the firewall ( and many others) or tcp wrappers () to ban (temporarily or permanently) the wannabe hacker. Simultaneously, fail2Ban informs system administrator with email for its activity in real time.
Some activities which considered as attacks are: multiple attempts for ssh connection using accounts that do not exist in the system multiple attempts for ssh connection switching passwords Apache requests for web pages often requested by bots and scanners. You do not need fail2ban (not even iptables) if your hosting provider offers a dedicated hardware firewall. Hardware firewalls as Cisco ASA 550 series and even smaller devices as FortiGate-60C can offer protection, which fail2ban offers (and moreover). Setup Configuration In summary: SystemMonitorScripts – RRDtool Trac. Notes ¶ The scripts and methods described here are by no means universal. They are rather meant as a starting point for adaption to your own needs, without the hassle of learning all about RRDtool before you can even start.
They have been tested mainly on Debian Etch machines. Prerequisites ¶ On Debian, you need to install some extra packages if you want the full monitoring capabilities. Lm-sensors - for CPU and system temparature readings. In conclusion: the command apt-get install grep sed net-tools rrdtool lm-sensors smartmontools sysstat should prepare a properly installed system flawlessly. Installation and Setup ¶ Installation is really easy, just unpack the attached file as user "root" in the "/" directory. tar xzvf rrdmontools.tar.gz Setup is also done quite quickly, just open up /var/local/rrd/rrdcreate.sh with your favourite editor and change the lines USAGESTATS="hda eth0 eth1" HEALTHSTATS="cpu1;CPU1;CPU+1 cpu2;CPU2;CPU+2 sys;DDR;System hda;Seagate" Usage statistics ¶ or Install ¶ Usage ¶
PirateBox + COPS (Calibre OPDS (and HTML) PHP Server) So... I managed to get COPS (see title) installed on my PirateBox 0.6.3 on an MR3020. (In case you don't know what Calibre is or what it does, you can find more info here.) COPS is great application that allows me to have a fully searchable book archive with book descriptions, ratings, and other metadata. This is how I did it: 1. Install PirateBox as normal. 2.
Make sure when you are connecting the router to the internet that you do not disable piratebox in a way that will unmount /mnt/usb (this is where php and the modules will be installed). /etc/init.d/piratebox nodns This will prevent piratebox from managing dns and allow you out to the internet but will leave /mnt/usb mounted. 3. Install them like this: opkg update opkg -d piratebox install php5-mod-dom php5-mod-gd php5-mod-json php5-mod-pdo php5-mod-pdo-sqlite php5-mod-sqlite php5-mod-sqlite3 php5-mod-xml php5-mod-xmlreader php5-mod-xmlwriter php5-mod-zip 4. 5. Mkdir /opt/piratebox/www/php/cops 6. Mkdir /mnt/usb/books 7. 8. 9. 10. 11.
The Spamhaus Project. Welcome! Recording Changes to the Repository. Login. Le blog de NicoLargoTerminator, le terminal ultime sous GNU/Linux | Le blog de NicoLargo | Une des grande différence entre un Linuxien et un Windowsien est le temps passé devant le terminal (console en mode graphique). Si les terminaux fournis par défaut sous GNU/Linux sont à des années lumières des pauvres consoles CMD ou PowerShell de Microsoft, ils sont encore loin derrière le logiciel dont je vais vous parler dans ce billet.
Terminator (logiciel libre sous licence GPL) propose les fonctions suivantes: configuration de la fontes et des couleurs avec gestion de la transparence (association dans des profils)division horizontale et verticale de la fenêtre pour disposer de plusieurs terminauxchaque terminal peut disposer d'un profil différentpossibilité d'envoyer les lignes de commandes saisies au clavier sur un groupe de terminauxcapture d'écran du terminal en 2 clics de sourisscroll bar infiniepossibilité de lancer des commandes automatiquement au démarrage du terminal Voici donc un aperçu de la bête: Autre fonction très utile, le regroupement.
A Cloud as an Interface. Nmap - Free Security Scanner For Network Exploration & Security Audits. Nginx news.