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· 14 min read
Konrad Przewłoka

Popular industrial and home monitoring systems are based on a central media server that connects cameras with the end users. This architecture is fine for most use cases, however have some drawbacks such as: higher latency, privacy concerns (if you use 3rd party server), and high cost.

In the article we present a peer-to-peer alternative: let's remove a media server and directly access a camera streaming service running on the camera itself.

The project is based on WebRTC for audio and video streaming to a web browser. Access to the server over the Internet is possible thanks to Husarnet VPN Client.

Here are some of the advantages of our solution:

  • low latency over the Internet
  • simple infrastructure architecture (only your laptop and Internet camera)
  • quick setup (everything is dockerized)

Basically all WebRTC infrastructure is hosted on the Internet camera (Single Board Computer + webcam) together with a simple web server.

Janus WebRTC server hosted inside a Docker container on Raspberry Pi with remote access over the internet

· 9 min read
Paweł Kozubal
caution

Some part of the content from this post was migrated to our Docker Platform tutorial. Content left here will be getting gradually more and more outdated.

Docker Containers provide some level of isolation, but unfortunately, not enough if you want to give full access to someone who you do not trust.

🔐 In this blog post we will show you a much safer alternative: Kata Containers that provide VM-like isolation for your container, while keeping the simplicity of Docker ecosystem.

💡 As an example use-case we will configure a VPN client and SSH server inside Kata Container, that can be securely exposed to untrusted users of your service. Doing the same with pure Docker would be very risky.

Thanks to Husarnet P2P VPN used in this example you can provide a secure and quick access to isolated containers in an easy way.

Comparison of Kata Containers and pure Docker running on runc

· 8 min read
Dominik Nowak
caution

Most of the content from this post was migrated to our Docker Platform tutorial. Content left here will be getting gradually more and more outdated.

Encapsulating software within a container brings a lot of benefits, such as quicker deployment, easier development and - last but not least - isolation of your host system from the application.

In this blog post I will show you how to install and configure a VPN client directly inside a docker container without a need of installing anything on your host system.

Thanks to that other computers from a VPN network will have access only to that container and not to your host system!

Because a container has it's own VPN IPv6 network, you can also easily move that container to other hosts without changing anything in your system configuration.

tip

If you want to connect your existing multi-container system over the internet, then using a separate Docker VPN container will be a better move.

We cover that topic in a blog post introducing Docker VPN sidecar container.

I will show you how to do that in a few easy steps...

Connect over VPN network to a docker container directly to gain SSH access to the docker container over the internet

· 10 min read
Dominik Nowak

In this article I present how to host a web app on your Raspberry Pi (or other computers) with a couple of interesting features.

  • ⛔ no static IP address, Dynamic DNS or port forwarding on your router needed
  • 🚀 low latency access over the public Internet without server in the middle
  • 🔁 possibility to easily share access to that web app only to specific people

The web app will consist of two elements:

  • ✏️ front-end: using Bootstrap 4 and websocket client written in JS
  • ✏️ back-end: Python app with a websocket server providing a JSON API to the front-end part

I show a bi-directional connection over a single websocket. The demo application will be very simple - controlling a LED connected to Raspberry Pi using a button in web UI and controlling an indicator in the web UI over the button connected to Raspberry Pi.

💭 You can treat this app as a boilerplate code for your own, more sophisticated apps requiring a low-latency control over a web user interface.

Python backend and Bootstrap 4 front-end hosted on Raspberry Pi with remote access over the Internet

· 11 min read
Dominik Nowak

Remote Desktop Software helps you access your headless (without physical display, mouse or keyboard) computer or server desktop over the network.

There are many different solutions available using RDP, RFB (VNC) or proprietary protocols. Some of them are open source and free to use, but many of them are quite expensive. In this article I will show you how to configure one of them - TigerVNC which works great, is open source, multiplatform and is completely free.

I will also show you how to access remote desktop of your computer over the Internet even if it doesn't have a static IP, or is hidden behind a NAT or a firewall.

Tiger VNC server running on RaspberryPi with VPN access over the Internet

· 10 min read
Dominik Nowak

This blog post is an all-in-one setup guide for all of you interested in having both over the internet (remote) and LAN access to SSH terminal for your Raspberry Pi.

  • ⛔ no port forwarding on your router
  • ⛔ no static IP needed
  • ⛔ no VPN server configuration

We start from installing the Raspberry Pi system image, then go through configuration of Wi-Fi connection, finishing on establishing VPN network between your laptop and Raspberry Pi.

Let's start!

access raspberry pi ssh terminal remotely using a VPN

· 5 min read
Dominik Nowak

There are a lot of examples on the internet about how to perform OTA (Over-The-Air firmware update) to your ESP32 as long as your chip is in the same LAN as your computer.

While Husarnet is basically a VPN software which works not only on your laptop, but also on your ESP32, it's easy to port exisitng OTA examples to work over the Internet. I'll show you how to to that.