milankragujevic

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milankragujevic

Introduction

Sometimes you may want to use a DNS server for specific domain requests and another DNS server for all other requests. This is helpful, for instance, when connected to a VPN. For hosts behind that VPN you want to use the VPN's DNS server but all other hosts you want to use Google's public DNS. This is called "DNS splitting."

Here, we run dnsmasq as a background service on macOS. The dnsmasq configuration described below implements DNS splitting.

Install

brew install dnsmasq

milankragujevic

#!/usr/bin/env python

import os
import sys
import subprocess
import tempfile
import struct
import shutil
import hashlib

milankragujevic

#!/bin/bash
SEC=$(curl -s -v 'http://192.168.0.1/goform/logon' -H 'Content-Type: application/x-www-form-urlencoded' --data-raw 'username_login=&password_login=&language_selector=en' --insecure 2>&1 | grep 'Set-Cookie' | cut -d '=' -f 2 | cut -d ';' -f 1)
CSRF=$(curl -s 'http://192.168.0.1/ad_restart_gateway.html' -H "Cookie: sec=${SEC}" --insecure | grep csrftoken | cut -d '"' -f 6)
curl -s 'http://192.168.0.1/goform/ad_restart_gateway' -H "Cookie: sec=${SEC}" --data-raw "csrftoken=${CSRF}&tch_devicerestart=0x00" --insecure >/dev/null 2>&1
echo "Done!"

milankragujevic

#!/bin/bash
PAGE_ID="$(date +%Y-%m-%d_%H-%M-%S)"
FILENAME="scan_$PAGE_ID.jpg"
FILENAME_PDF="scan_$PAGE_ID.pdf"
FILENAME_PDF_1="scan_$PAGE_ID.1.pdf"
mkdir -p /home/milan/Documents/Scanned\ Documents/
ssh [email protected] "scanimage --mode Gray --resolution 200 --format=jpeg -l 4 -t 4 -x 207.9 -y 289.011 >/tmp/$FILENAME"
scp [email protected]:/tmp/$FILENAME /home/milan/Documents/Scanned\ Documents/$FILENAME
chmod 0777 /home/milan/Documents/Scanned\ Documents/$FILENAME
chown milan:milan /home/milan/Documents/Scanned\ Documents/$FILENAME

milankragujevic

<?php
error_reporting(0);
set_time_limit(0);
ob_end_clean();

$url = $_GET['url'];

if(isset($_SERVER['HTTP_RANGE'])) {
	stream_context_set_default([
		'http' => [

milankragujevic

rm /root/roaming_assistant.sh; wget http://10.25.100.10/roaming_assistant.sh -O /root/roaming_assistant.sh; chmod +x /root/roaming_assistant.sh

rm /root/monitor-ra.sh; wget http://10.25.100.10/monitor-ra.sh -O /root/monitor-ra.sh; chmod +x /root/monitor-ra.sh

rm /root/restart-ra.sh; wget http://10.25.100.10/restart-ra.sh -O /root/restart-ra.sh; chmod +x /root/restart-ra.sh

/root/restart-ra.sh

milankragujevic

iptables -I FORWARD ! -s 192.168.100.242 -p tcp --dport 53 -j ACCEPT
iptables -I FORWARD ! -s 192.168.100.242 -p udp --dport 53 -j ACCEPT
iptables -t nat -A PREROUTING ! -s 192.168.100.242 -p tcp --dport 53 -j DNAT --to 192.168.100.242:53
iptables -t nat -A PREROUTING ! -s 192.168.100.242 -p udp --dport 53 -j DNAT --to 192.168.100.242:53

iptables -I FORWARD ! -s 192.168.100.242 -p tcp --dport 5353 -j ACCEPT
iptables -I FORWARD ! -s 192.168.100.242 -p udp --dport 5353 -j ACCEPT
iptables -t nat -A PREROUTING ! -s 192.168.100.242 -p tcp --dport 5353 -j DNAT --to 192.168.100.242:53
iptables -t nat -A PREROUTING ! -s 192.168.100.242 -p udp --dport 5353 -j DNAT --to 192.168.100.242:53

milankragujevic

iptables -I FORWARD -p tcp --dport 853 -j DROP
iptables -I FORWARD -p udp --dport 853 -j DROP

milankragujevic

curl -s https://install.speedtest.net/app/cli/install.deb.sh | sudo bash
sudo apt install -y speedtest