frfahim

Network Namespace

Linux kernal (v5.6) has 8 types of namespaces. Network namespace is one of the feature of linux kernal. Most container technologies use this feature to create isolated network stack in the operating system. We can create virtualized network stack with its interfaces, IP range, routing table etc. We can run application in different network stacks.

VETH devices are virtual ethernet devices. They can act as tunnels between network namespaces to create a bridge to a physical network device in another namespace, but can also be used as standalone network devices. The virtual ethernet device will act as a tunnel between the network namespaces that we will create.

We will go thorugh linux network namespace. We want to learn how two network namespace communicate with each other. Also we will see how a network namespace will communicate with outer world.

Our objectives:

sampointer

If you'd like to keep up-to-date with Chrome from unstable but otherwise want to run a stable NixOS release you can do the following:

• Create a file /etc/nixos/unstable.nix:

{ config, pkgs, ...}:
let
  baseconfig = { allowUnfree = true; };
  unstable = import <nixos-unstable> { config = baseconfig; };
in {

eirikb

#!/usr/bin/env bash

echo
echo "Arch Linux in QEMU with love from eirikb"
echo
set -x

TARGET=ArchLinuxARM-rpi-armv7-latest.tar.gz

wget "http://os.archlinuxarm.org/os/$TARGET"

peltho

Svelte cheatsheet

Doc examples

Table of Contents

1. Structure
2. Imports
3. Variables
4. Reactivity
5. Variables

jamesmcm

# Running specific applications through a VPN with network namespaces

# Initial state
curl ifconfig.co/city
sudo ip link list
sudo ip netns list

# Disable Uncomplicated Firewall (Ubuntu)
sudo ufw disable

luk6xff

You might want to read this to get an introduction to armel vs armhf.

If the below is too much, you can try Ubuntu-ARMv7-Qemu but note it contains non-free blobs.

Running ARM programs under linux (without starting QEMU VM!)

First, cross-compile user programs with GCC-ARM toolchain. Then install qemu-arm-static so that you can run ARM executables directly on linux

If there's no qemu-arm-static in the package list, install qemu-user-static instead

plembo

Emulating a Raspberry Pi with QEMU

Goal: Emulate a Raspberry Pi with QEMU in order to run the Raspbian O/S (based on Debian Linux).

The current setup is not ideal. For one thing, the maximum RAM allowed using the "versatile-pb" firmware is 256 Mb. In addition, only the most basic peripherals, a keyboard and mouse, are supported.

A number of articles have been written on this topic. Most are outdated, and the few recent ones are missing key information.

tjvr

sda5_crypt UUID=c66880c1-c2f1-40fc-9580-f25d493876ef none luks,discard

android10

1 - Open the terminal and type below given command

cd /root
yum install wget       (you can skip this step if wget is already installed)
wget https://assets.ubuntu.com/v1/fad7939b-ubuntu-font-family-0.83.zip (check the newest version)

2 - Check if the directory /usr/share/fonts exist. If the fonts directory do not exist,you can create yourself.

agentzh

#!/usr/bin/env bash

set -x

main_if=ens33
ping_count=1

echo 1 > /proc/sys/net/ipv4/ip_forward || exit 1

ip netns del ns1 > /dev/null 2>&1