Archives for November 2022

Many virtualization host servers will run Linux without a graphical user interface. Such a configuration enables more hardware resources to be available to the virtual machines. Management of the virtual machines must then occur at the command-line. The virsh command is an interactive shell to KVM virtual machines. The following are some subcommands you can […]

Many virtualization host servers will run Linux without a graphical user interface. Such a configuration enables more hardware resources to be available to the virtual machines. Management of the virtual machines must then occur at the command-line. The virsh command is an interactive shell to KVM virtual machines. The following are some subcommands you can […]

Netplan is a network configuration utility found on some distributions. It uses YAML description files to configure network interfaces. These files are stored in the /etc/netplan/ directory. You will use a text editor to create or modify interface configuration files. Netplan includes subcommands to make configurations more reliable. For example, you can enter sudo netplan […]

Network bridging involves associating two networks that normally would not pass network traffic between them. Bridging works at OSI Layer 2 with MAC addresses. A Linux system can be configured to bridge two networks. The brctl (bridge control) command is used to configure bridging within Linux. A common example of bridging is as follows: brctl […]

Network bridging involves associating two networks that normally would not pass network traffic between them. Bridging works at OSI Layer 2 with MAC addresses. A Linux system can be configured to bridge two networks. The brctl (bridge control) command is used to configure bridging within Linux. A common example of bridging is as follows: brctl […]

The ethtool is a utility for displaying and configuring Ethernet card driver and hardware settings. Changes made using ethtool are runtime changes and not persistence changes. Whether or not it is installed by default will depend on the distribution in use. The ethtool utility has a great many options for gathering information. Syntax The syntax […]

Ethtool is a small utility for examining and tuning the settings of Ethernet-based network interfaces. With ethtool, it is possible to control various parameters, such as: Speed Media type Duplex operation Getting/setting EEPROM register content Hardware check summing Wake-on-LAN Syntax The syntax of the ethtool command is: # ethtool [options] {device name} ethtool Command Options […]

The iwconfig command is used to provide wireless NIC configurations, including settings like SSID, encryption information, etc. To connect to a wired network, we simply assign an IP address and subnet mask with the ifconfig utility. A wireless network connection requires the iwconfig and iwlist utilities. Syntax The syntax of the iwconfig command is: # […]

The iwconfig command is used to provide wireless NIC configurations, including settings like SSID, encryption information, etc. To connect to a wired network, we simply assign an IP address and subnet mask with the ifconfig utility. A wireless network connection requires the iwconfig and iwlist utilities. Syntax The syntax of the iwconfig command is: # […]

The ifconfig command enables a user to view the current IP addressing information for each NIC recognized by the system. Viewing the IP address configuration is one of the earliest steps in network troubleshooting. The ifconfig command shows the IP address, subnet mask, broadcast ID, MAC address, basic performance information, and NIC name. The tool […]