Category: Technology

Technology content from Leo Nelson

China’s Global Satellite Internet Service

Over the weekend, China launched a satellite into low-earth orbit, the first step of a plan to provide global satellite internet to people who still don’t have reliable access. Nearly 3.8 billion people are unconnected to the internet, and women and rural poor are particularly affected.
The satellite, called Hongyun-1, took off at China’s national launching site Jiuquan Satellite Launch Center on Saturday (Dec. 22). Hongyun-1, or “rainbow cloud,” is the first of 156 satellites of the same name developed by state-owned spacecraft maker China Aerospace Science and Industry Corporation (CASIC). A Long March 11 rocket, made by another state-owned firm, China Aerospace Science and Technology Corporation, carried the Hongyun-1.

China got on the bandwagon to provide global satellite internet

Wallor – Slim, Smart, RFID Wallet

Wallor is a slim wallet with smart capabilities. The wallet has worldwide GPS tracking, Bluetooth alert system and RFID protection.

Key Features:

  • Card Fit/Number of Cards: 10-12
  • Bill Fit/Number of Bills: 15+
  • Keys/Coins: Yes. Special pocket
  • Size: 4.6 x 3.5 x 0.25 inch (110 x 85 x 7 mm)
  • Material: Black Nappa Leather
  • RFID Protection: Yes
  • GPS Tracking: Cloud data tracking
  • Data Plan: Free

Related Links:

Wallor 2.0

Setup Pi-Hole in Azure

Pi-Hole is a network wide DNS sinkhole that can be setup on multiple software/hardware configurations. Originally, I was going down the path of setting up Pi-Hole on a Raspberry Pi 3, but decided to explore the Azure VM path based on some posts from others.

Below are the high level steps I followed to setup Pi-Hole on my home network.

1.Create a VM in Azure and keep track of the public IP. (I picked the Ubuntu 18.04 LTS version with 1 CPU and 1 GB of RAM.)

2. Create an inbound firewall rule to enable SSH traffic (i.e. TCP Port 22) from your home network

Home > Virtual machines > Connect to virtual machine > Networking

3. SSH to the VM and update the package database

sudo apt-get update

4. Install Pi-hole

curl -L | bash

5. Configure Pi-hole for your environment. Some suggested configuration options are below[2]

6. Create an inbound firewall rule to enable Web traffic (i.e. TCP Port 80, 443) from your home network

8. Confirm you can access the Admin page of Pi-Hole by going to <VM IP>

9. Create an inbound firewall rule to enable DNS traffic (i.e. TCP/UDP Port 53)

10. Update your home router’s DNS to point to the public IP of your VM by following instructions at How do I configure my devices to use Pi-hole as their DNS server?

11. Test that Pi-Hole is properly configured by visiting the Pi-Hole Ad Pages Test Page.

[1] Post Implementation Notes:

  • Under the VM, check Operations > Auto-shutdown to confirm the settings match the shutdown behavior of the VM you want
  • Under the VM, check Operations > Update Management to confirm the settings match the OS automatic update behavior you want

[2] Related Links:

The following blogs posts were extremely helpful with the steps required to setup Pi-Hole in Azure and modifying some Pi-Hole settings to work for most home needs.

Sky-Hole Revisited [Pi-Hole in a cloud VM for easy DNS-based ad-blocking]

A New PiHole in the Sky

Network-wide blocking of Ads, tracking cookies and popups