rmbolger’s gists

rmbolger / d8-viz.ps1

Last active December 8, 2021 19:46

A simple visualization of Advent of Code 2021 - Day 8 part 2

	<#
	.SYNOPSIS
	A simple visualization of Advent of Code 2021 - Day 8 part 2

	.EXAMPLE
	Get-Content .\d8.txt \| .\d8-viz.ps1

	Run visualization from input file

	.EXAMPLE

rmbolger / Find-LetsEncryptChainCerts.ps1

Last active December 7, 2023 16:30

Find copies of Let's Encrypt related chain/root certificates on Windows

	#Requires -Version 2.0

	<#
	.SYNOPSIS
	Find copies of Let's Encrypt related chain/root certificates.
	.DESCRIPTION
	This script searches all certificate stores both for the Local Computer and all active Local User accounts with an HKEY_USERS registry hive loaded.

	It does not require running as administrator, but will throw warnings for registry locations it can't read. So it is suggested to run as administrator.

rmbolger / Find-ExpiredR3.ps1

Last active October 1, 2021 19:15

Find Expired R3 Intermediate Certificates on Windows

	#Requires -Version 5.1
	#Requires -RunAsAdministrator

	[CmdletBinding()]
	param(
	[switch]$Remediate,
	[switch]$Quiet
	)

	$InformationPreference = 'Continue'

rmbolger / NetworkSortingClasses.ps1

Last active March 9, 2025 13:36

PowerShell sorting classes IPv4 CIDR strings, FQDNs, and Email addresses

	# When working with large sets of domain names, email addresses, network CIDR ranges,
	# and IP addresses, the default string/lexical sorting those values is not ideal.
	#
	# Sorting numbers as strings which what happens with IP addresses and CIDR rangers
	# ends up putting "2" after "11" and "22" after "111" for example.
	#
	# Similarly with domain names and email addresses, I find that I often want all the
	# email addresses with the same domain suffix grouped together instead of all the
	# bob@<domain> addresses together. And I want FQDNs like <blah>.example.com to sort
	# together instead of all the mail.<domain> values together.

rmbolger / Test-IPInSubnet.ps1

Created July 23, 2020 05:45

Test-IPInSubnet.ps1

	function Test-IPInSubnet {
	[CmdletBinding()]
	param(
	[Parameter(Mandatory,Position=0)]
	[string]$IP,
	[Parameter(Mandatory,Position=1)]
	[string[]]$Subnet
	)

	$IPval = ([ipaddress]$IP).Address

rmbolger / ParseNetlogonDns.ps1

Created June 7, 2019 13:24

Parses the netlogon.dns file on an Active Directory domain controller to display a nicely formatted and sorted list of required DNS records for that DC

gc "$($env:SYSTEMROOT)\System32\config\netlogon.dns" | %{ $p = $_.Split(' '); $d = ($p[4..($p.Count-1)] -join ' '); [pscustomobject]@{name=$p[0].Trim('.').Split('.');ttl=$p[1];type=$p[3];data=$d} } | sort @{E={$a=@()+$_.name;[Array]::Reverse($a);$a}},type,data | select @{L='rec';E={$_.name[0]}},@{L='zone';E={$_.name[1..($_.name.Count-1)] -join '.'}},ttl,type,data

rmbolger / keybase.md

Created January 23, 2019 04:31

KeyBase proof

Keybase proof

I hereby claim:

I am rmbolger on github.
I am rmbolger (https://keybase.io/rmbolger) on keybase.
I have a public key ASBwymVX2hfBKfUWYAKBxNK-6syGE2xymydggktaYMuogQo

To claim this, I am signing this object:

rmbolger / Get-UidFromSid.ps1

Last active July 5, 2025 04:38

Functions for converting a SID to a UID for use with RFC2307 attributes in Active Directory

	function Get-UidFromSid
	{
	[CmdletBinding()]
	param(
	[Parameter(Mandatory=$true,Position=0,ValueFromPipeline,ValueFromPipelineByPropertyName)]
	[System.Security.Principal.SecurityIdentifier]$sid
	)

	Process {
	# convert sid to byte array

rmbolger / Convert-PfxToPem.ps1

Last active December 3, 2024 10:48

Convert-PfxToPem.ps1

	# Adapted from Vadims Podāns' amazing work here.
	# https://www.sysadmins.lv/blog-en/how-to-convert-pkcs12pfx-to-pem-format.aspx
	#
	# Also, if you need a more complete PKI PowerShell module, he has authored one here:
	# https://github.com/Crypt32/PSPKI
	#
	# This version of the function includes a few fixes from the module's version of the
	# function and changes up the output options so you get separate .crt/.key files by
	# default named the same as the pfx file (or thumbprint if directly referencing a cert).
	# -IncludeChain adds an additional -chain.pem. Relative paths are now

rmbolger / Disable-SSLCertChecking.ps1

Created March 16, 2017 00:05

Disable Cert Validation for Powershell

	# http://stackoverflow.com/a/38729034/75772
	# https://d-fens.ch/2013/12/20/nobrainer-ssl-connection-error-when-using-powershell/
	if (-not ([System.Management.Automation.PSTypeName]'ServerCertificateValidationCallback').Type)
	{
	$certCallback=@"
	using System;
	using System.Net;
	using System.Net.Security;
	using System.Security.Cryptography.X509Certificates;
	public class ServerCertificateValidationCallback

Ryan Bolger rmbolger

Keybase proof