syzdek

MacOS VPN Split Routes

MacOS Tahoe does not allow the end user to specify local networks which by-pass the VPN. Routes on MacOS can be manually modified to send default traffic through the local LAN and only send specific routes across the VPN by creating more sepcific routes (i.e. 0.0.0.0/1 and 128.0.0.0/1) to use the local gateway and by creating specific routes for the VPN connection.

In my specific environment, I have the following networks:

• 192.168.0.0/24 - MacBook/Workstation LAN
• 192.168.0.1/32 - MacBook/Workstation LAN Gateway
• 10.0.0.0/8 - Remote VPN Networks

syzdek

Keybase proof

I hereby claim:

• I am syzdek on github.
• I am syzdek (https://keybase.io/syzdek) on keybase.
• I have a public key ASAGpvnIp42DL04AiqXD3ppMpNOXC2cs0e9BQfbBykTHSAo

To claim this, I am signing this object:

syzdek

/*
 *  Example of getaddrinfo() and inet_ntop()
 *  Copyright (C) 2020 David M. Syzdek <david@syzdek.net>
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are
 *  met:
 *
 *     1. Redistributions of source code must retain the above copyright
 *        notice, this list of conditions and the following disclaimer.

syzdek

//
// Generated on:   2019-11-26 19:42:02
// Generated with: ./src/oidspectool
//                    --source
//                    ../src/utils/oidspectool/example.oidspec

//
#define _LDAPSCHEMA_OIDSPECS 1

#include <stdio.h>

syzdek

#!/bin/bash

FILE="${1}"
PROG_NAME="$(basename "${0}")"

if test -z "${FILE}";then
   echo "Usage: ${PROG_NAME} <file>"
   exit 1
fi

syzdek

This following can used to distribute common files amoung hosts. For example, to distribute a shared hosts file.

Initial Setup:

  mkdir /etc/gitfiles
  cd /etc/gitfiles
  git init
  git remote add origin https://1.2.3.4/path/to/shared/repo.git

git fetch origin

syzdek

Keybase proof

I hereby claim:

• I am syzdek on github.
• I am syzdek (https://keybase.io/syzdek) on keybase.
• I have a public key whose fingerprint is 000C CBFA BA86 33B7 9FB3 E532 6C69 94B2 91A8 B42D

To claim this, I am signing this object:

syzdek

#
#   Instructions for making hybrid GPT/MBR boot USB thumb drive.
#   The Slackware Linux installer will be added to the image as an example,
#   however the syslinux configuration can be modified to include any desired
#   image.
#
#   A USB thumb drive formatted with these instructions was able to
#   boot the Slackware Installer on a:
#
#      Dell Latitude E6430 in Legacy BIOS mode

syzdek

#!/bin/bash

echo "building TomSellers's nmap..."
set -x -e
pwd
git clone https://github.com/TomSellers/nmap.git
( cd nmap && git branch build 7c833b933e771923e660 && checkout build )
( cd nmap && ./configure --prefix=/opt/nmap )
( cd nmap/libdnet-stripped && make )
( cd nmap/liblinear && make )

syzdek

Converting base 10 frame diagram to base 8 with byte offsets:

Original (https://tools.ietf.org/html/rfc6455#section-5.2):

   This wire format for the data transfer part is described by the ABNF
   [RFC5234] given in detail in this section.  (Note that, unlike in
   other sections of this document, the ABNF in this section is
   operating on groups of bits.  The length of each group of bits is
   indicated in a comment.  When encoded on the wire, the most
   significant bit is the leftmost in the ABNF).  A high-level overview