≡ Menu

Networking

Linux: See Bandwidth Usage Per Process With Nethogs Tool

I have Red Hat Enterprise Linux 6.x server. How do I find out and groups network bandwidth usage by process under Linux operating systems? How do I find out what programs are using network bandwidth under Linux operating systems? How can I see bandwidth usage per PID, command, and user on a Linux operating systems?
[click to continue…]

OpenBSD: Configure Network Interface As A Bridge / Network Switch

I have Soekris single board communication embedded computers which is optimized for low power and network usage. The server has four Ethernet ports. How do I setup IPv4 software bridge using OpenBSD operating systems so that the rest of four ports act as a network switch?
[click to continue…]

Linux Rename Eth0 Network Interface Card Name [ Udev ]

A wireless NIC is showing as wlan0 but I need to be appear as eth1. How can I rename wlan0 devices through udev as eth1? How do I change or rename eth0 as wan0 under Linux operating systems?
[click to continue…]

Debian Linux: Configure Network Interfaces As A Bridge / Network Switch

My server has five Ethernet ports and one ADSL port. How do I setup IPv4 software bridge using Debian Linux operating systems so that the rest of five ports act as a network switch?
[click to continue…]

Ubuntu / Debian Linux Install ethtool Too To Display / Set Ethernet Device Settings

The ethtool can be used to query and change settings such as speed, auto- negotiation and checksum offload on many network devices, especially Ethernet devices. How do I install and use ethtool under Ubuntu or Debian Linux based system running on my IBM server?
[click to continue…]

Linux / Unix: Test Internet Connection Speed From Console Over SSH Command Line

I have recently rented a dedicated server for my hobby projects and learning CentOS Linux server. I was informed that I am connected to the 100M/s port. How do I test my Internet connection download speed from the console over the ssh session without using HTML5 or Adobe flash/Java applets based websites? How do I test my upload speed from the console?
[click to continue…]

Debian / Ubuntu: Console Based Network Load Monitor

I am looking for a generic network load monitor that will work over the remote ssh session. Nothing fancy. All I need is current device statistics together with a nice graph. How do I monitor network load using a console based software under Debian or Ubuntu Linux operating systems?
[click to continue…]

OpenBSD: Boot / Install Using PXE (Preboot Execution Environment)

How do I boot and Install OpenBSD operating system using Preboot Execution Environment (PXE)? Do I need to use an existing OpenBSD host to install OpenBSD using PXE?
[click to continue…]

HowTo: Linux Limit A Specific User’s Shell Account Network Bandwidth Using Bash Shell and Trickle

I am using a bash shell under Ubuntu Linux operating system. Sometime I need to restrict my own Internet bandwidth for all my shell applications such as ftp, sftp, wget, curl and friends. How do I limit the network speed under bash without setting up a complicated firewall and tc rules as described here?
[click to continue…]

Ubuntu / Debian Linux: Install and Setup TFTPD Server

How do I install and configure TFTP server under Debian or Ubuntu Linux server to configure networking equipment such as remote booting of diskless devices or remote loading of Unix like operating systems via PXE boot?
[click to continue…]