Kenny MacDermid KenMacD

Ubiquity EdgeMAX Ad & Malware Blocking Content Filtering using EdgeRouter

NB: I am not using this setup anymore, and will not update the config and code if it breaks. I recommend Pi-hole instead, which gives many features such as web UI, statistics, DNS-over-HTTPS, and definitely better written code ;)

This will show you how to use your EdgeRouter as a local DNS server and blocking DNS queries to domains that hosts ads and malware.

The blocklist used is:

'hosts' by Steven Black

List of intended memory-management policies (note: the actual policies are below, after both kinds of modifiers):

structure modifiers:

relative - own address is added to make effective pointer. Useful for realloc and memcpy, as well as shared memory.
middle_pointer - actually points to the middle of an object, with a known way to find the start
- note particularly how this interacts with subclasses. Possibly that should be the only way to create such a pointer? It isn't too crazy to synthesize a subclass just for the CowString trick ...
(other arithmetic tricks possible: base+scale+offset, with each of these possibly hard-coded (which requires that there be multiple copies of some ownership policies! we can't just use an enum) or possibly embedded)
(but what about "object is stored in a file too large to mmap" and such? Or should those only satisfy "ChunkyRandomIterator" concept?)

How to recover lost Python source code if it's still resident in-memory

I screwed up using git ("git checkout --" on the wrong file) and managed to delete the code I had just written... but it was still running in a process in a docker container. Here's how I got it back, using https://pypi.python.org/pypi/pyrasite/ and https://pypi.python.org/pypi/uncompyle6

Attach a shell to the docker container

Install GDB (needed by pyrasite)

apt-get update && apt-get install gdb

Original "dumb" smoke detector interconnect sounds the siren on all interconnected smoke detectors when a 9-to-12 volt (referenced to neutral/white) direct-current signal is continuously present on the signal wire (red). This still how pretty much all interconnected smoke alarms indicate a fire condition.

However, modern interconnected detectors are capable of detecting carbon monoxide and other conditions. When these conditions are signaled, they must be identified as something other than a smoke alarm by the other detectors. Ideally, any dumb smoke detectors

Don't use VPN services.

No, seriously, don't. You're probably reading this because you've asked what VPN service to use, and this is the answer.

Note: The content in this post does not apply to using VPN for their intended purpose; that is, as a virtual private (internal) network. It only applies to using it as a glorified proxy, which is what every third-party "VPN provider" does.

A Russian translation of this article can be found here, contributed by Timur Demin.
A Turkish translation can be found here, contributed by agyild.
There's also this article about VPN services, which is honestly better written (and has more cat pictures!) than my article.

	# taken from http://www.piware.de/2011/01/creating-an-https-server-in-python/
	# generate server.pem with the following command:
	# openssl req -new -x509 -keyout key.pem -out server.pem -days 365 -nodes
	# run as follows:
	# python simple-https-server.py
	# then in your browser, visit:
	# https://localhost:4443


	import http.server

	# I used this shell.nix to build LineageOS 13.0 for my maguro (Samsung Galaxy Nexus GSM) phone
	# The build instructions for normal Linuxes are here: https://wiki.lineageos.org/devices/maguro/build
	# For NixOS, follow those instructions but skip anything related to installing packages
	# Detailed instructions:
	# cd into an empty directory of your choice
	# copy this file there
	# in nix-shell:
	# $ repo init -u https://github.com/LineageOS/android.git -b cm-13.0
	# $ repo sync
	# $ source build/envsetup.sh

	#!/bin/bash

	# Bash script for setting or clearing touch requirements for
	# cryptographic operations the OpenPGP application on a YubiKey 4.
	#
	# Author: Alessio Di Mauro <[email protected]>

	GCA=$(which gpg-connect-agent)
	DO=0
	UIF=0

	# coding=utf-8
	"""
	LICENSE http://www.apache.org/licenses/LICENSE-2.0
	"""
	import datetime
	import sys
	import time
	import threading
	import traceback
	import SocketServer