TheAshwanik

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: ghost
  labels:
    role: blog
spec:
  replicas: 1
  template:
    metadata:

TheAshwanik

WireGuard Site-to-Site

Accessing a subnet that is behind a WireGuard client using a site-to-site setup

Problem Summary

We want to access a local subnet remotely, but it is behind a NAT firewall and we can't setup port forwarding. Outgoing connections work, but all incoming connections get DROPPED by the ISP's routing policy.

Solution Summary

TheAshwanik

# Encode inputfile.tar.gz as a series of video frames
# Frames are written to frames/frameNNNN.png
from PIL import Image

with open('inputfile.tar.gz', 'rb') as f:
    data = f.read()

WIDTH = 120
HEIGHT = 90
CHUNK_SIZE = int((WIDTH * HEIGHT) / 8)

TheAshwanik

wordlist created from original 41G stash via:

grep -rohP '(?<=:).*$' | uniq > breachcompilation.txt

Then, compressed with:

7z a breachcompilation.txt.7z breachcompilation.txt

Size:

TheAshwanik

# OpenVPN Let's Encrypt first run config file
#https://loige.co/using-lets-encrypt-and-certbot-to-automate-the-creation-of-certificates-for-openvpn/

cert-name= 
authenticator = standalone
standalone-supported-challenges = tls-sni-01
non-interactive = True
rsa-key-size = 4096
email = "user@server.com"
domains = "vpn.server.com"

TheAshwanik

Rails Generating & Scaffolding

Rails' use of strict naming conventions means a lot of core code SHOULD be in the same format whoever writes it? It could be written by a friend, colleague or a computer... it shouldn't matter because the same Rails rules apply to everyone.

This means that Rails can actually do some tasks for you! It can actually build things and write code on your behalf...

Coming from another language like PHP, this can seem like magic.

TheAshwanik

Point Domain to Amazon Web Services (AWS) EC2 Instance

1. Open the Amazon Route 53 console at https://console.aws.amazon.com/route53/.
2. If you are new to Amazon Route 53, you see a welcome page; choose Get Started Now for DNS Management. Otherwise, choose Hosted Zones in the navigation pane.
3. Choose Create Hosted Zone.
4. For Domain Name, type your domain name.
5. Choose Create.
6. Click the Hosted Zone, edit record set.
7. In the value, add ec2-54-152-134-146.compute-1.amazonaws.com.
8. Change your DNS file to point to the IPv4 address (This would be in something like GoDaddy).

TheAshwanik

Symmetic encryption

For symmetic encryption, you can use the following:

To encrypt:

openssl aes-256-cbc -salt -a -e -in plaintext.txt -out encrypted.txt

To decrypt:

TheAshwanik

class Fail2banNotifier
  def initialize(options)
    @default_options = options
    @default_options[:logfile] ||= Rails.root.join('log', 'fail2ban.log')

    # Roll over every 30M, keep 10 files
    @logger ||= Logger.new(@default_options[:logfile], 10, 30*1024*1024)
  end

  def call(exception, options={})

TheAshwanik

How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)

---

Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files: