Apoorva Kumar rava-dosa

Note: I'm currently taking a break from this course to focus on my studies so I can finally graduate

Setup a Local Only SMTP Email Server (Linux, Unix, Mac)

1 - Point localhost.com to your machine

Most of programs will not accept an email using just @localhost as domain. So, edit /etc/hosts file to make the domain localhost.com point to your machine, including this content to the file:

127.0.0.1 localhost.com

2 - Install Postfix

Dr Ross Williams' collection of security related HTTP headers

Reject all HTTP connections. Convert them to HTTPS or generate an error.

See http://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security

WARNING

May contain out of date information. Check the comments below!

The list of actions listed below was taken mostly from Book Of Zeus with minor modifications and did the job well for Ubuntu version, which was available at that moment (May 2016). This gist was created for internal use and was never meant to be discovered by the web, although Google managed to find and index this page, which was a great surprise for me. Please check the original source for the updated information (links are provided in most of the sections), and read the comments below: they provide more details about the usage experience.

System Updates

http://bookofzeus.com/harden-ubuntu/initial-setup/system-updates/

Keeping the system updated is vital before starting anything on your system. This will prevent people to use known vulnerabilities to enter in your system.

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

	/**
	* Awesome website
	* @author YOUR_NAME_HERE
	* @version 0.1
	*/

	/* ============================ RESET ============================ */

	/* ===== Eric Meyer Reset ===== */

	/// This is not written to compile. I just copied everything into one file to make viewing easy
	/// Here is a sample usage (task definitions and implementations omitted)

	int main()
	{
	TaskScheduler scheduler;
	MyTaskA taskA;
	MyTaskB taskB;

	BOOL running = true

	<!DOCTYPE html>
	<html>
	<head>
	<title>My Iframe</title>
	</head>
	<body>

	<button>Botão</button>

	<script type="text/javascript">

	##
	# Temporary Speed-up configuration for fast import
	# references: https://www.elastic.co/blog/performance-considerations-elasticsearch-indexing
	# p.s. If you do not want to restart your node/cluster - don't perform 1 and 2 points
	##

	# 1. Change "ES_HEAP_SIZE" from 50% of memory (default and recommended) to something like 80%
	mem=`free -m \| grep Mem \| awk '{ print $2 }'` && heap=$[ ($mem/1024)*80/100 ]g && \
	sudo sed -i "s/ES_HEAP_SIZE=.*/ES_HEAP_SIZE=$heap/" /etc/init.d/elasticsearch