tg12 tg12

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SRE by day, Trader by night [email protected]

tg12 / Markov_transition.py

Created January 16, 2018 12:00

Markov transition matrix in Python

	#the following code takes a list such as
	#[1,1,2,6,8,5,5,7,8,8,1,1,4,5,5,0,0,0,1,1,4,4,5,1,3,3,4,5,4,1,1]
	#with states labeled as successive integers starting with 0
	#and returns a transition matrix, M,
	#where M[i][j] is the probability of transitioning from i to j

	def transition_matrix(transitions):
	n = 1+ max(transitions) #number of states

	M = [[0]*n for _ in range(n)]

tg12 / echo.py

Created February 27, 2018 09:06

	import socket

	class Server(object):
	def __init__(self,host,port):
	self._host = host
	self._port = port
	def __enter__(self):
	sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
	sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR,1)
	sock.bind((self._host,self._port))

tg12 / ubuntu_privacy.txt

Created October 4, 2018 13:30

From NCSC Hardening Guide

	Ubuntu Privacy

	sudo systemctl stop apport.service
	sudo systemctl disable apport.service
	sudo systemctl mask apport.service
	gsettings set com.ubuntu.update-notifier show-apport-crashes false
	ubuntu-report -f send no
	sudo systemctl stop whoopsie.service
	sudo systemctl disable whoopsie.service
	sudo systemctl mask whoopsie.service

tg12 / sysadmin_script.sh

Last active March 7, 2020 15:39

Ultimate Sysadmin Script, run on fresh install of Ubuntu

	#!/bin/bash

	#If possible, add something in for choosing [1] Configure Basics [2] Configure Security [3] Configure VMware Tools [4] Configure All. This might require Perl.
	#set -x

	#read -p "Configure this server to be on 192.168.1.3/24?" yn
	#while true; do
	#case $yn in
	# [Yy]* )
	# echo "What IP address will be assigned to this server?"

tg12 / firehol_iptables.sh

Last active March 7, 2020 15:43

If you are a masochist, Create iptables from ALL Firehol lists

	#this may take a while, run with no hup and monitor the log
	rm blocklist-ipsets/ -r
	git clone https://github.com/firehol/blocklist-ipsets.git
	cd blocklist-ipsets/
	#We just want the IP's
	grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}" *.ipset > merged-file
	#We just want the unique IP's across the board
	sort -u merged-file > merged-file_output
	#Just the unique ips, iptables
	for IP in $(cat merged-file_output \| grep -oE "\b([0-9]{1,3}\.){3}[0-9]{1,3}\b" \| awk '{print $1}' \| sort \| uniq); do echo "Banning $IP"; iptables -A INPUT -s $IP/32 -d 0/0 -j DROP; iptables -A INPUT -s $IP/32 -d 0/0 -j LOG --log-prefix 'firehol-iptables-rule-js'; done

tg12 / basic_iptables.sh

Last active January 9, 2019 20:12

Basic set of IP Table rules for Basic Functionality

	# Remove previous rules
	iptables -F
	iptables -X
	iptables -Z
	# Set default policies
	iptables -P INPUT DROP
	iptables -P OUTPUT ACCEPT
	iptables -A INPUT -p tcp --dport 22 -m limit --limit 25/minute --limit-burst 100 -j ACCEPT
	iptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
	iptables -A INPUT -p tcp --dport 22 -j ACCEPT

tg12 / merge_ips.py

Last active January 30, 2019 21:00

Start of a lovely script to create iptables

	#!/usr/bin/env python

	import re
	import socket, struct
	from ipwhois import IPWhois
	from ipaddress import ip_network, ip_address

	ips = []

	with open("merged-file3") as f:

tg12 / create_iptables_rules.py

Last active January 31, 2019 18:59

Create massive firewall with iptables

tg12 / ftp_check.py

Last active August 27, 2019 19:51

Fast Multi-threaded FTP Scanner

	from datetime import datetime
	import time
	import threading
	###########################
	from multiprocessing import Process
	import random
	###########################
	import dns.resolver
	import dns.reversename
	import ftplib

tg12 / margin_req_notes.txt

Created May 22, 2019 13:14

Margin Requirement Notes vs Average Price