cmbaughman

Setting Up MySQL Replication

Overview

We’ll configure one MySQL instance as the source database and another as its replica. Replication allows data synchronization between these separate databases.

Step 1: Configure the source

1. Obviously install MySQL on 2 servers.

cmbaughman

const nlp = require("compromise");
const nameParser = require("name-parser");

// Function to determine the name format
function determineNameFormat(name) {
    // Patterns to match different name formats
    const firstLast = nlp(name).match("#Honorific #FirstName #LastName").out("array");
    const lastFirst = nlp(name).match("#LastName, #FirstName #Honorific").out("array");
    const middleName = nlp(name).match("#FirstName #MiddleName #LastName").out("array");
    const middleInitial = nlp(name).match("#FirstName #MiddleInitial #LastName").out("array");

cmbaughman

Here is an example of using JavaScript generators to handle multiple HTTP requests in a sequential manner:

const fetch = require("node-fetch");

function* fetchUsers() {
  const user1 = yield fetch("https://jsonplaceholder.typicode.com/users/1");
 const user2 = yield fetch("https://jsonplaceholder.typicode.com/users/2");

cmbaughman

Fun stuff with Roku

Enumerate Roku devices

sudo nmap -sV -O -n 192.168.X.X/24

Identify the device and other stuff using netcat on the SSDP multicast address, port 1900.

cmbaughman

#!/bin/bash

sudo apt install sssd heimdal-clients msktutil

sudo mv /etc/krb5.conf /etc/krb5.conf.default

COMP=$HOSTNAME

read -p 'What is the domain name? (example: URLFINANCIAL without the .local) ' DOMAIN
LCASEDOMAIN=`echo "$DOMAIN" | tr '[:upper:]' '[:lower:]'`

cmbaughman

FROM ubuntu:latest
 
RUN apt-get update \
  && apt-get install -y python3-pip python3-dev \
  && cd /usr/local/bin \
  && ln -s /usr/bin/python3 python \
  && pip3 install --upgrade pip 

# INSTALL DEPENDENCIES
RUN apt-get install -y curl unzip openjdk-8-jre-headless xvfb libxi6 libgconf-2-4

cmbaughman

#!/bin/bash

find . -type d -empty -exec rm -i -R {} \;

cmbaughman

Simple Ubuntu Server Setup

---

Create a user

NOTE: You must use public key based authentication.

1. Create user adduser testuser
2. Grant sudo usermod -aG sudo testuser
3. ufw enable/disable

cmbaughman

sudo apt autoremove
sudo apt clean
sudo apt-get autoclean
sudo journalctl --vacuum-time=3d
rm -rf ~/.cache/thumbnails/*

set -eu
snap list --all | awk '/disabled/{print $1, $3}' |
    while read snapname revision; do
        snap remove "$snapname" --revision="$revision"

JeremyMorgan

#/usr/bin/bash
# strings to look for in our file
# Note: you could just parse the whole file. But if you put in a bad password your IP 
# could end up on the bad guy list
declare -a badstrings=("Failed password for invalid user"
                "input_userauth_request: invalid user"
                "pam_unix(sshd:auth): check pass; user unknown"
                "input_userauth_request: invalid user"
                "does not map back to the address"
                "pam_unix(sshd:auth): authentication failure"