Sikandarkhan

Cross-site request forgery attacks (CSRF or XSRF for short) works by an attacker gaining access to a victim’s browser – typically through a malicious link.  An attack targets Web applications failing to differentiate between valid requests and forged(maliciously crafted, unauthorized) requests controlled by the attacker. Successful CSRF attacks can have serious consequences. Such as initiating bank transactions, purchasing an online good, Reset a password etc,.



How does a CSRF attack work?
On their own (phishing site), an attacker could create an button or form that creates a request against your bank site:
<form action="https://vulnerable-website.com/password/change" method="POST">
  <button type="submit">Click here for free Pizza!</button>
</form>

Sikandarkhan

stages:
  - build
  - deploy
    
# Job One for making build
build: 
  image: node:14.15
  stage: build
  script:
    - npm i @angular/compiler-cli@13.2

Sikandarkhan

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

Sikandarkhan

 In my case, the problem I had was that I registered a mail subdomain (e.g., mail.company.com) with Mailgun but was creating the records for company.com (not mail.company.com). Instead of creating a mail.company.com domain I entered the records as follows (taking from your example):

company.com

RECORD TYPE	NAME	VALUE
TXT	mail	“v=spf1 include:mailgun.org ~all”
TXT	pic._domainkey.mail	“k=rsa; p=165CHARACTERPASSWORDSTRING”
CNAME	email.mail	mailgun.org.

Sikandarkhan

	# Proxy configuration
	proxy_http_version     1.1;
	proxy_ignore_headers   'Set-Cookie';
	proxy_buffering        off;
	proxy_intercept_errors on;
	proxy_method           GET;
	proxy_set_header       Host 'bucket.s3-website-sa-east-1.amazonaws.com';
	proxy_set_header       Authorization '';
	proxy_hide_header      x-amz-id-2;
	proxy_hide_header      x-amz-request-id;

Sikandarkhan

#!/bin/sh

# Make sure to:
# 1) Name this file `backup.sh` and place it in /home/ubuntu
# 2) Run sudo apt-get install awscli to install the AWSCLI
# 3) Run aws configure (enter s3-authorized IAM user and specify region)
# 4) Fill in DB host + name
# 5) Create S3 bucket for the backups and fill it in below (set a lifecycle rule to expire files older than X days in the bucket)
# 6) Run chmod +x backup.sh
# 7) Test it out via ./backup.sh

Sikandarkhan

var admin = require("firebase-admin");
var serviceAccount = require("../controllers/updated_key_iot.json");
admin.initializeApp({credential: admin.credential.cert(serviceAccount),
databaseURL: "https://your-domain.firebaseio.com"});
var registrationToken = "deviceRegisterationToken-generates-from-ios-application";
var payload={ notification:{
title: "Have a great weekend",} };
var options = { priority: "high", 
timeTolive: 60*60*24
};

Sikandarkhan

Hello world 

Sikandarkhan

Installing Cassandra on Mac OS X

Install Homebrew

Homebrew is a great little package manager for OS X. If you haven't already, installing it is pretty easy:

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

Sikandarkhan

[Unit]
Description=supervisord - Supervisor process control system for UNIX
Documentation=http://supervisord.org
After=network.target

[Service]
Type=forking
ExecStart=/bin/supervisord -c /etc/supervisord/supervisord.conf
ExecReload=/bin/supervisorctl reload
ExecStop=/bin/supervisorctl shutdown