Ovidiu Ionescu ovidiu-ionescu

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ovidiu-ionescu / split_dns.ps1

Last active June 27, 2023 16:03

Manipulate the Nrpt table in Windows to enable split DNS

	# Remove all existing entries
	Get-DnsClientNrptRule \|ForEach { Remove-DnsClientNrptRule -Name $_.Name -Force }

	# Everything ending in domain.com gets resolved by the specified DNS servers
	Add-DnsClientNrptRule -Namespace ".domain.com" -NameServers @("10.0.0.10", "10.0.0.11")

	# see what's in the table
	Get-DnsClientNrptRule

ovidiu-ionescu / gist:844f000ce26b0a6d1b0277d515e49a0e

Last active April 16, 2020 10:18

Reversing a String in Java

new StringBuilder(str).reverse().toString()

ovidiu-ionescu / nginx_client_certificates.sh

Last active February 21, 2020 20:03

Create a self signed certificare and a client certificate to authenticate to nginx

	#!/bin/bash
	# @author Ovidiu Ionescu
	# This script generates client certificates for browser authentication

	if [ $# -lt 2 ]; then
	echo "Usage: $0 name email"
	exit 1
	fi

	NAME=$1

ovidiu-ionescu / create_network_namespaces.sh

Last active February 15, 2020 20:39

Creates a network namespace and a network connection between that and the current namespace. Can run multiple servers on the same port and all interfaces

	#!/bin/bash

	if (( $EUID != 0 )); then
	echo "Please run this as sudo $0" >&2
	exit 1
	fi

	function create_space {

	NS=$1

ovidiu-ionescu / create_dummy_interface.sh

Created February 11, 2020 21:32

Create a dummy network interface in Linux

	#!/bin/bash
	# Creates a dummy network interface, useful for running a local server

	SUDO=''
	if (( $EUID != 0 )); then
	SUDO='sudo'
	fi

	NAME=organizator
	$SUDO ip link add $NAME type dummy