yunazuno

#define KBUILD_MODNAME "xdp_drop_80_8080"
#include <uapi/linux/bpf.h>
#include <linux/in.h>
#include <linux/if_ether.h>
#include <linux/if_packet.h>
#include <linux/if_vlan.h>
#include <linux/ip.h>
#include <linux/ipv6.h>

BPF_HASH(counter, uint32_t, long);

heppu

Create bootable USB

dd bs=4M if=/path/to/archlinux.iso of=/dev/sdx status=progress oflag=sync

Boot from USB and set prepare system

loadkeys <your-keymap>

abacaphiliac

Start Kafka service

The following commands will start a container with Kafka and Zookeeper running on mapped ports 2181 (Zookeeper) and 9092 (Kafka).

docker pull spotify/kafka
docker run -d -p 2181:2181 -p 9092:9092 --env ADVERTISED_HOST=kafka --env ADVERTISED_PORT=9092 --name kafka spotify/kafka

Why Spotify?

ADVERTISTED_HOST was set to kafka, which will allow other containers to be able to run Producers and Consumers.

bekce

I wanted to build an LDAP server that queries a MySQL server to fetch users and check their passwords. It is mainly used for old software that does not work with custom OAuth2 providers. Redmine is an example of this.

• ldapjs: library to start-off LDAP servers from scratch
• node.js driver for mysql: to connect to a mysql server

Instructions:

1. Create the database and table with insert.sql

qlyoung

You Will Need

• A local copy of AFL with Doug Birdwell's networking patch
• A binary dump of a BGP OPEN packet
• Latest copy of Free Range Routing
• Patience

Acquiring Resources

A local copy of AFL with Doug Birdwell's networking patch

Akkiesoft

- hosts: docker
  become: yes
  tasks:
    - apt:
        name:
            - apt-transport-https
            - ca-certificates
            - curl
            - software-properties-common
        update_cache: yes

bufadu

How to build a load balancer with BGP and ECMP using VyOS

According to this cloudflare blog article "Load Balancing without Load Balancers", we can build a rock-solid load balancer only using a router. All the magic comes from BGP and Equal-Cost Multi-Path routing.

In this howto, I will use bird as BGP router on linux instance (ie. servers).

Test environment

I use GNS3 with this architecture :

pazdera

#!/usr/bin/env bash

# https://developer.github.com/v3/repos/releases/#create-a-release

repo=$1
tag=$2
name=$3
text=$4
token=$GH_TOKEN