DennyHalim.com dennyhalim

How to setup a practically free CDN using Backblaze B2 and Cloudflare

⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,

How to setup a literally free CDN

Create repo on GitHub where you'll put your files.
Use jsDeliver or statically to get your assets.

Here is repo I'm using:

https://github.com/jcubic/static

And links to files look like this:

Randomized MAC addresses

Most modern client devices may now support, random hardware address aka randomized mac addresses.

From an I.T op perspective, this may cause DHCP pool exhaustion issues.

From a user perspective, they may not know what issues this may cause, besides a "I can't connect to the network anymore" issue.

This maybe of interest too, https://github.com/SystemJargon/mac-changer

	#!/bin/sh
	#
	# in /etc/pf.conf:
	# table <p2p_blocklist> file "/etc/pfdata/p2p_blocklist"
	# set limit table-entries 500000
	# block log quick from <p2p_blocklist>
	# block return log quick from any to <p2p_blocklist>

	BLOCKLIST_URL="http://www.bluetack.co.uk/config"
	DOWNLOAD_DIR="/tmp/blocklists"

	# List all possible power config GUIDs in Windows
	# Run: this-script.ps1 \| Out-File powercfg.ps1
	# Then edit and run powercfg.ps1
	# (c) Pekka "raspi" Järvinen 2017

	$powerSettingTable = Get-WmiObject -Namespace root\cimv2\power -Class Win32_PowerSetting
	$powerSettingInSubgroubTable = Get-WmiObject -Namespace root\cimv2\power -Class Win32_PowerSettingInSubgroup

	Get-WmiObject -Namespace root\cimv2\power -Class Win32_PowerSettingCapabilities \| ForEach-Object {
	$tmp = $_.ManagedElement

	#!/bin/sh

	# SOURCES:
	# QNAP persistent smb.conf commands @ https://forum.qnap.com/viewtopic.php?t=132175
	# Socket options @ https://calomel.org/samba_optimize.html
	# Server multichannel support / AIO @ https://blog.chaospixel.com/linux/2016/09/samba-enable-smb-multichannel-support-on-linux.html
	# Min receivefile, RW raw, AIO switched aio to 16384 @ https://superuser.com/a/928126

	netbios_wrapper()
	{

	#Requires -RunAsAdministrator
	# Unlock-PowerCfg - v22.05.11

	# Disable "Connected Standby"
	Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\Power' -Name 'CSEnabled' -Value 0 -Force

	# Get Power Settings entries and add/set 'Attributes' to 2 to unhide
	$PowerCfg = (Get-ChildItem 'HKLM:\SYSTEM\CurrentControlSet\Control\Power\PowerSettings' -Recurse).Name -notmatch '\bDefaultPowerSchemeValues\|(\\[0-9]\|\b255)$'
	foreach ($item in $PowerCfg) { Set-ItemProperty -Path $item.Replace('HKEY_LOCAL_MACHINE','HKLM:') -Name 'Attributes' -Value 2 -Force }