Linux can support multiple network devices. Options are yes/no. This article covers TCP/IP networking, network administration, and system configuration basics. Elle aura systématiquement l'adresse IP 127.0.0.1. If you want to set up static routes on a multi-homed system, create a route file for each interface. The opinions expressed on this website are those of each author, not of the author's employer or of Red Hat. Consistent Network Device Naming of the Red Hat Deployment Guide. L'interface "eth0" sera configurée avec l'adresse IP 192.168.1.2, le masque de sous réseau 255.255.255.0 et la passerelle 192.168.1.1 (ce paramètre est facultatif).
Sinon, si l'interface eth0 doit être configurée automatiquement par un serveur DHCP, il faut indiquer : Pour que les modifications de ce fichier soient prises en compte, il faut redémarrer ou utiliser les commandes ifup et ifdown. I have started my career as a Linux system Administrator after that quit my job to start something new that excites me and started a Tech Company in order to provide the best technology to my clients. In Debian / Ubuntu and derivatives thereof - the network config files and parameter names are different. Linux easily manages multiple network interface adapters. You can configure it: Systemwide. 1. By convention, the option names are in uppercase and the values are in lowercase. This is, to me at least, one of the bothersome exceptions to the Linux Filesystem Hierarchical Standard (FHS) which explicitly states that only configuration files and not executable files are to be located in the /etc tree. Each interface configuration file is bound to a specific physical network interface by the MAC address of the interface. DEVICE: The logical name of the device, such as eth0 or enp0s2. Opensource.com aspires to publish all content under a Creative Commons license but may not be able to do so in all cases.
However, I suggest a small change in the title such as: The ONBOOT line specifies that the interface is to be activated at startup time. Linux can support multiple network devices. Options are yes/no. I rather would have seen a topic on commandline network configuration for wireless interfaces. There is one old and now deprecated file you might encounter. A SystemV start script used static configuration files to start the wired or wireless network at boot time, or with a simple command like service network start command from the command line. It may also create naming conflicts when adding a new network interface. As always with Linux, the decision of which service to use is your choice.
This service is still available, although the commands are redirected through systemd. It works but getting it working was indistinguishable from magic. Option values can be enclosed in quotes, but that is not necessary unless the value is more than a single word or number. Local DNS resolution.
This article covers the main TCP/IP network configuration files used by Linux to configure various network services of the system such as IP Address, Default Gateway, Name servers - DNS, hostname and much more. Si ce n'est pas le cas il faudra charger les modules correspondants. It was also used to set the networking host name as shown in the following example: This file has been present but unused in Fedora since release 19. It is located in /etc/sysconfig and was used in the past to enable or disable networking. See the Networking Guide for your version of Red Hat Enterprise Linux or CentOS for more details on configuring routing. Si la carte n'est pas détectée, il faudra charger le module avec la commande. If you're an old-style config file editor watch out for the PREFIX parameter. IPADDR: The IP Address assigned to this NIC such as 192.168.0.10, BROADCAST: The broadcast address for this network such as 192.168.0.255, NETMASK: The netmask for this subnet such as the class C mask 255.255.255.0, NETWORK: The network ID for this subnet such as the class C ID 192.168.0.0, SEARCH: The DNS domain name to search when doing lookups on unqualified hostnames such as "example.com".
Get the highlights in your inbox every week. NetworkManager (recommandé) Network Manager est la solution utilisée de nos jours sous linux. On peut rechercher les messages contenant "eth0" pour avoir plus d'informations sur la première carte réseau détectée : La commande suivante permet d'afficher les cartes réseaux reliées au bus PCI : Une fois votre carte reconnue par le noyau, vous devez au moins préciser son adresse IP et son masque de sous-réseau. For many years I have used an ancient For temporary network configurations, you can use the ip command which is also found on most other GNU/Linux operating systems. He has taught RHCE classes for Red Hat and has worked at MCI Worldcom, Cisco, and the State of North Carolina. Dans le cas d'une IP fixe, il vaut mieux renseigner un serveur DNS (ci-dessus celui de Google). We'll assume you're ok with this, but you can opt-out if you wish. It is not as simple as for systemwide. Parmi les modules courants on peut noter : ne2k-pci pour les cartes NE2000, via-rhine, rtl8139... Les modules disponibles pour votre noyau se trouvent dans /lib/modules/
Le fichier /etc/hostname contient le nom de la machine. Every network interface has its own configuration file in the /etc/sysconfig/network-scripts directory. Le noyau donne parfois des informations utiles sur les cartes réseau. There are a couple ways to locate the MAC address of a NIC. The use of this file is uncommon, unless you are using the host as a router with some complex routing needs. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. These changes persist even after a system reboot. For example, a computer with two NICs will have two devices labeled eth0 and eth1 . It did not require extra steps to figure out what long and obscure name belonged to an interface. Good post, you should follow up with a 802.1x addendum as most universities and businesses are using secure network access control in some fashion. David prefers to purchase the components and build his... 6 open source tools for staying organized, Appendix A. You must change the MAC address in the file if you replace the interface. Names like ethX are still used by CentOS 6.x. Linux desktop computers also support multiple network interfaces, and you can use your Linux computer as a multi-network client, or as a router for internal networks; such is the case with a couple of my own systems. You just have to add to that file a new line containing: For a single user. Consistent Network Device Naming. La commande suivante affiche les modules réseau disponibles pour le noyau en cours d'utilisation : Pour connaître le nom du module en fonction du nom commercial d'une carte, une recherche sur l'internet est souvent la meilleure solution. anyone who ever experienced networkmanager failing here knows what i am talking about. This file starts the interface on boot, assigns it a static IP address, defines a domain and network gateway, specifies two DNS servers, and does not allow non-root users to start and stop the interface. NetworkManager then creates the new interface configuration file. There are a few different ways to set up a home Linux network, but the following method is how I setup my desktop and laptops all running Linux Mint. The "none" option defaults to static. Options are static, DHCP, bootp, none.
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