Konstantin Novakovskii clickfreak

Linux NetFilter, IP Tables and Conntrack Diagrams

IPTABLES TABLES and CHAINS

IPTables has the following 4 built-in tables.

1) Filter Table

Filter is default table for iptables. So, if you don’t define you own table, you’ll be using filter table. Iptables’s filter table has the following built-in chains.

sudo dnf install jack-audio-connection-kit-dbus qjackctl rtirq realTimeConfigQuickScan
sudo usermod -a -G audio,jackuser,users `whoami`

$ cat /etc/security/limits.d/95-jack.conf:

@jackuser - rtprio 90
@jackuser - nice -19
@jackuser - memlock 209715200

sudo dnf install mixxx jack-audio-connection-kit-dbus qjackctl rtirq realTimeConfigQuickScan kernel-tools
sudo usermod -a -G audio,jackuser,users `whoami`

https://wiki.linuxaudio.org/wiki/system_configuration

$ cat /etc/security/limits.d/95-jack.conf:

@jackuser - rtprio 90

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8

	---

	- name: install HWE Stack on Ubuntu 12.04
	hosts: all
	user: someuser
	sudo: yes

	tasks:
	- name: Install linux-hwe-generic package
	apt:

	#!/usr/bin/env python

	import pcap
	import socket

	from scapy.all import *
	conf.use_pcap=True # because by default scapy try to use raw socket and can't assign bpf filter
	conf.verb=0 # it just grab all traffic and get error on processing
	import scapy.arch.pcapdnet

	usage: bind_upload.py [-h] --key <key> --name <name> --zone <zone>

	Selectel domains-api bind-zone import helper

	optional arguments:
	-h, --help show this help message and exit

	required named arguments:
	--key <key> Your API Key
	--name <name> Domain name for creation

	#!/usr/bin/env python
	# -- coding: utf-8 --

	import os
	import sys
	import json
	import logging
	import httplib
	import argparse

	#!/usr/bin/env python3

	import os
	import json
	import requests
	import logging

	# you can create permanent token in account settings: https://accounts.gcorelabs.com/profile/api-tokens
	APIKEY = '<your_permanent_token>'

	#!/bin/sh
	curl -s https://api.github.com/users/<username>/keys \| jq -r ".[].key" > ~/.ssh/authorized_keys_github