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aioutecism / gist:2638bb9eaf9ffc13348c
Last active July 31, 2024 03:18
Set up a VPN Server (PPTP) on AWS and use it anywhere

Set up a VPN Server (PPTP) on AWS

  1. Create a EC2 instance using Ubuntu 14.04.
  2. In Secure Group Inbound Rules, add a SSH Rule(TCP, Port 22, 0.0.0.0/0) and a Custom TCP Rule(TCP, Port 1723, 0.0.0.0/0).
  3. Optional: Associate a Elastic IP with the instance.
  4. SSH into the instance.
  5. sudo apt-get install pptpd.
  6. sudo vim /etc/pptpd.conf. Uncomment localip 192.168.0.1 and remoteip 192.168.0.234-238,192.168.0.245.
  7. sudo vim /etc/ppp/pptpd-options. Uncomment ms-dns and ms-wins. Change the IP to Google's DNS like this:
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aioutecism / throw-eggs-problem.js
Created April 19, 2018 06:11
JavaScript version to the solution of Throwing Eggs from a Building problem. https://medium.freecodecamp.org/how-to-solve-the-google-recruiters-puzzle-about-throwing-eggs-from-a-building-de6e7ef1755d
const bestNextStepCache = {};
function bestNextStep(floors) {
if (!bestNextStepCache[floors]){
if (floors <= 2) {
bestNextStepCache[floors] = 1;
}
else {
let min = Infinity;
let nextStep;