This guide explains Linux bridge concepts, how bridges work at the data‑link layer, and provides step‑by‑step commands for creating, configuring, and managing bridges using brctl, NetworkManager, iproute2, and persistent configuration files on CentOS and Ubuntu systems, including STP setup.
This guide explains Linux network management, covering IP address and routing configuration, interface naming rules, GRUB tweaks for legacy eth names, editing configuration files for CentOS and Ubuntu (including Netplan YAML), restarting appropriate services, and using graphical tools with NetworkManager, while clarifying the differences between the traditional network service and NetworkManager.
This guide walks through CentOS7 network configuration, explaining interface naming conventions, using NetworkManager tools like nmcli, editing ifcfg files, changing hostnames, renaming interfaces to eth0, adding kernel parameters, and applying changes with service restarts.
This guide walks through CentOS 7 network setup, explaining interface naming conventions, using NetworkManager tools like nmcli and nmtui, editing configuration files, renaming interfaces, adjusting kernel parameters, and applying changes to achieve reliable connectivity.
Learn how to configure network interfaces on CentOS 7 using NetworkManager tools like nmcli, nmtui, and nm-connection-editor, rename devices, edit configuration files, and apply changes via systemctl, covering both command‑line and graphical methods for effective Linux network management.
This guide explains Linux network management, covering IP address and routing configuration, interface naming rules, GRUB tweaks for CentOS and Ubuntu, file‑based setups for CentOS 7, Ubuntu 16.04, Ubuntu 18.04+ with netplan, and graphical configuration via NetworkManager, plus service differences.
A CentOS 8 system may fail to acquire a DHCP address after reboot due to a NetworkManager bug that aborts DHCP activation; by changing the system hostname to localhost as a workaround, the DHCP process succeeds, providing a simple fix until an updated NetworkManager package is available.
This guide walks through preparing for a Debian 9 upgrade, backing up critical files, resolving Network‑Manager device‑management and Wi‑Fi MAC‑randomization problems, restoring touch‑pad tap functionality, and fixing GNOME 3 window‑title and top‑bar issues, plus recommended GNOME extensions for a smoother desktop experience.
This guide explains how to detect DNS pollution on Ubuntu 12.04, disable the default NetworkManager dnsmasq cache, install and configure dnsmasq to route specific domain queries through OpenDNS on special ports, and verify that legitimate IP addresses are returned.
