GATEWAY=’gateway ip’ ->compulsary required to access internet. IPADDR=’ipv4 address’ -> If you have have dhcp in your network, make sure it’s ip address assigning range doesn’t conflicts with your ip. NETMASK=’complete netmask or subnetmask address’ Various directives of configuration file for static addressing: You can also use GUI tool for configuration by using system-config-network command. This is a simplistic script replacing one option of ifconfig, namely, IP address management.
#Where is the ifcfg 0etho in linux on a mac manual
PEERDNS=’yes or no’ -> If set to yes, then this network card takes it’s DNS information from the DHCP server and over writes whatever may be previously configured in the etc/nf configuration file. IFCFG(8) Linux IFCFG(8) NAME ifcfg - simplistic script which replaces ifconfig IP management SYNOPSIS ifcfg DEVICE command ADDRESS PEER DESCRIPTION This manual page documents briefly the ifcfg command. IPV6INIT=’yes or no’ -> If set to yes, you can configure card with ipV6 USERCTRL=’yes or no’ -> If set to yes, local user can activate or deactivate network card. TYPE=’type of network card like Ethernet or wireless’ If you have token ring card, type token ring in quotes because it’s two words. HWADDR=’48bit hardware address of network card’ ->MAC address.(This addresses are assigned at the factory is unique for every card ever produced) (if you have configured dhcp on different network set the value as ‘bootp’) Highlighting the device and clicking the "Edit" button allows you to view or alter the configuration of a device.Various directives of configuration file for dynamic addressing:ĭEVICE=’name of device’ -> like eth0, eth1, ppp0, ppp1 etc.īOOTPROTO=dhcp -> dhcp assumes the local dhcp server. The "Network Connections" dialog is available from the menu (System > Preferences > Network Connections) at the console. The network configuration can also be initiated using the setup command. The "DNS configuration" option on the first screen allows you to modify the configuration in the "/etc/sysconfig/network" and "/etc/nf" files.
Selecting the device allows you to edit the adapter's network configuration, which is saved to the "/etc/sysconfig/network-scripts/ifcfg-eth0" file.
The "Device configuration" option gives a list of network devices. Navigate using the "tab", "arrow" and "return" keys. The system-config-network-tui and system-config-network commands start a text-based network configuration tool. TX packets:48 errors:0 dropped:0 overruns:0 carrier:0 RX packets:48 errors:0 dropped:0 overruns:0 frame:0 TX packets:6144 errors:0 dropped:0 overruns:0 carrier:0 RX packets:13548 errors:0 dropped:0 overruns:0 frame:0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 The current network settings are displayed using the ifconfig command.Įth0 Link encap:Ethernet HWaddr 52:54:00:91:6A:B3 The ifdown and ifup commands are used to stop and start the specified network adapters.Īctive connection path: /org/freedesktop/NetworkManager/ActiveConnection/5 The "/etc/sysconfig/network-scripts" directory contains a number of network related scripts and commands.
There can be multiple "nameserver" lines, one for each nameserver. The "/etc/nf" file is used to configure the location of the DNS servers to be used for name resolution. The "/etc/hosts" file contains information for local name resolution.ġ27.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 The following example is for a static IP address. # cat /etc/sysconfig/network-scripts/ifcfg-eth0 The following example contains the configuration for a DHCP adapter. If you have multiple network adapters, you would expect additional configuration files (eth1, eth2 etc.). The "/etc/sysconfig/network-scripts/ifcfg-eth0" file holds the network configuration for the "eth0" adapter. The "/etc/sysconfig/network" file holds top-level networking configuration, including the hostname and gateway settings.
Remember, the exams are hands-on, so it doesn't matter which method you use to achieve the result, so long as the end product is correct. This article covers network configuration on Linux, with specific reference to the information needed for the RHCSA EX200 and RHCE EX300 certification exams. Home » Articles » Linux » Here Linux Network Configuration
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