When using Docker containers for development environments (also known as the opposite of micro-services) a common scenario is that you are using a laptop and want to run docker containers on a more powerful machine like a workstation or build server.
This can be done by exposing the Docker service API to the network and connecting to it from a different host. Here’s how to do it.
Wireguard is a modern VPN protocol allowing secure and confidential communication between a network of peers. Wireguard is based on the concept of private-public key cryptography and a number of other modern cryptographic algorithms. Have a look at the wireguard white paper for more details.
Since Linux kernel version 5.6 (late March 2020) wireguard is an integral part of the Linux kernel. That means Linux distributions using a kernel >= 5.6 do not need to install any additional packages in order to support wireguard.
There are two ways to set up a VPN connection with NordVPN on Ubuntu. The first one is to add NordVPN’s package repository to the apt sources and then install the nordvpn client via a simple sudo apt install nordvpn. The second one is to install OpenVPN and configure it to use the servers of NordVPN.
This how-to was written for Ubuntu 18.04 LTS (Bionic Beaver).
When working with IP multicast streams it can sometimes be useful to convert a captured IP stream file to a corresponding MPEG2 transport stream (TS) file. Wireshark has a built-in capability to extract MPEG2-TS packets from the UDP packets of an IP multicast stream. This feature is somewhat hidden away in the menus and not obvious to find.
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