Yu 'noyle' Liu yuliu

Creating a CSR and SSL Certificate with SAN Extensions

Problem:

As per here Few days ago (after an update) FF simply refused to accept my self-signed certificate anymore, Firefox requires SAN (Subject Alternative Names) present:

It must be due to removed "subject common name" fallback support from certificate validation. This fallback mode was previously enabled only for manually installed certificates. The CA Browser Forum Baseline Requirements have required the presence of the "subjectAltName" extension since 2012, and use of the subject common name was deprecated in RFC 2818. Firefox from 101.0 onward no longer use certificate CN (Common Name) for matching domain name to certificate and have migrated to only using SAN (Subject Alternate Name) so if you self sign for internal devices you’ll need to regenerate.

	#!/bin/bash
	# file: ttfb.sh
	# curl command to check the time to first byte
	# usage
	# 1. ./ttfb.sh "https://google.com"
	# 2. seq 10 \| xargs -Iz ./ttfb.sh "https://google.com"

	curl -o /dev/null \
	-H 'Cache-Control: no-cache' \
	-s \

	<?php
	/**
	* MyBB 1.8 plugin: Share Misc
	* Website: https://github.com/yuliu/...
	* License: https://github.com/yuliu/.../blob/master/LICENSE
	* Copyright Yu 'noyle' Liu, All Rights Reserved
	*
	*/

	// Make sure we can't access this file directly from the browser.

	1. Open CMD as Administrator

	2. Paste the following commands into the Cmd: One by one, follow the order.

	cscript slmgr.vbs /ipk "SERIAL NUMBER HERE"

	Replace SERIAL NUMBER HER with any of these, according your Windows 10 installation type.
	Home/Core TX9XD-98N7V-6WMQ6-BX7FG-H8Q99
	Home/Core (Country Specific) PVMJN-6DFY6-9CCP6-7BKTT-D3WVR
	Home/Core (Single Language) 7HNRX-D7KGG-3K4RQ-4WPJ4-YTDFH