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SSH authentication using FIDO2 security key

Hardware security keys are not only used for web authentication. Since FIDO2 security keys can generate and store keys, they can be used for authentication with other protocols as well. In this case, FIDO2 security keys can be used to Continue reading The post SSH authentication using FIDO2 security key appeared first on Experiencing Technology . Related posts: SSH passwordless login with SSH-key…

Multi-process container images

While sticking to the mantra of One Container, One Process where possible, it is not always possible to have only one process running per container. Sometimes helper processes or side processes are needed. Side processes can be necessary to achieve Continue reading The post Multi-process container images appeared first on Experiencing Technology . Related posts: Network Interface order with…

Framework expansion-card for Token2 T2F2 security-key

While using the hardware security keys from Token2 on a Framework Laptop, one thing became clear: the Token2 T2F2 perfectly fits the Framework laptop design. The Token2 The Token2 T2F2-NFC-Slim TypeC is a FIDO2 hardware security key from the Swiss Continue reading The post Framework expansion-card for Token2 T2F2 security-key appeared first on Experiencing Technology . Related posts: FIDO2…

Setup postfix to send emails through another mail server

Modern email servers use a number of modern techniques to reduce the amount of spam. Most noticeable to this topic are SPF, DKIM and DMARC. With those techniques in place, the time of sending emails from any host directly and Continue reading The post Setup postfix to send emails through another mail server appeared first on Experiencing Technology . Related posts: SPF and multiple domain…

FIDO2 security-key login for ID-Austria

FIDO2 provides a secure and modern way of performing authentication. Even government websites like ID-Austria have started using FIDO2 authentication for their online services. While most modern authentication works the same way, ID-Austria works differently. What is ID-Austria ID-Austria is Continue reading The post FIDO2 security-key login for ID-Austria appeared first on Experiencing Technology…

Security keys and open source

Security keys advertised everywhere as the solution for modern security and password problems and many open source projects welcome the new technology, but what about the security keys themselves? How open are security keys and the technology they are based Continue reading The post Security keys and open source appeared first on Experiencing Technology . Related posts: What s the fuss about FIDO…

DNS and DNSSEC

Many stories begin with In the good old days but were the old days always so good? In the case of DNS, the old days go back a long way. You can read more about DNS itself at DNS Continue reading The post DNS and DNSSEC appeared first on Experiencing Technology . Related posts: SPF and multiple domain mailserver Migrate WordPress site with minimal downtime Migrate Baikal with minimal downtime

FIDO2 security key management via commandline

FIDO2 Security keys are starting to take off. Many online services support them and the number is growing every day. At this point it seems FIDO Security keys are the way forward. FIDO2 being the second iteration of the FIDO Continue reading The post FIDO2 security key management via commandline appeared first on Experiencing Technology . Related posts: What s the fuss about FIDO Secure…

What’s the fuss about FIDO

So many discussions are everywhere about FIDO, so what is all that fuss about? Lets look into why FIDO is argued to be the next big thing in authentication. Before getting into it, let me say thanks to all the Continue reading The post What s the fuss about FIDO appeared first on Experiencing Technology . Related posts: Secure authentication and how it changed over time Harden SSH server settings…

Secure authentication and how it changed over time

For decades, users have authenticated on systems with usernames and passwords. This method of authentication has not changed since the beginning of the Internet. As the Internet became a more hostile place and threats emerged, password rules were introduced. Those Continue reading The post Secure authentication and how it changed over time appeared first on Experiencing Technology . Related posts:…

Git and multiple remotes

Git is the de-facto standard version control system nowadays. It enables developers not only to version their code but also push repositories to a central server. Sometimes it makes sense to push it to more than one remote server. Add Continue reading The post Git and multiple remotes appeared first on Experiencing Technology . Related posts: Git repository cluster setup Setup gitosis to manage…

DNS at the core of the Internet

DNS might not be the oldest, but is for sure one of the oldest and still very important services building the core of the Internet. The domain name service, or DNS for short, is one of the core services of Continue reading The post DNS at the core of the Internet appeared first on Experiencing Technology . Related posts: SPF and multiple domain mailserver Migrate WordPress site with minimal…

Convert Subversion repository into git repositories

A long long time ago before git was the dominant version control system (VCS) I used Subversion for quite some time. With git now being the de-facto standard VCS, it was finally time to convert my last remaining subversion repositories Continue reading The post Convert Subversion repository into git repositories appeared first on Experiencing Technology . Related posts: Splitting up an SVN…

Review: Jabra Elite Active 75t

Back in the early 2000 s Bluetooth was the huge new thing to replace infrared as the wireless connection protocol. At that time one of the first wireless headsets I bought was a Jabra BT200. It was a huge, heavy device Continue reading The post Review: Jabra Elite Active 75t appeared first on Experiencing Technology . Related posts: Review: Use your Mac as bluetooth iPad keyboard Giveaway: Dash…

Trim video using ffmpeg

It might be over-complicated in some cases to fire up a huge video editing suite just to cut a section out of a video. Trimming a video does not have to be over complicated. The most tedious step is finding Continue reading The post Trim video using ffmpeg appeared first on Experiencing Technology . Related posts: Frame by frame video playback

Frame by frame video playback

Sometimes it can be helpful to inspect videos or sections of a video frame by frame. The simplest way to do this might be using ffplay. Although with its minimalistic user interface, the controls require getting used to. The program Continue reading The post Frame by frame video playback appeared first on Experiencing Technology . No related posts.

Verify installed rpm packages

Installing packages via rpm usually provides a lot of comfort. Simply installing an rpm deploys all files related to that package wherever they need to go across the system. Some packages distribute hundreds of files into different sections of the Continue reading The post Verify installed rpm packages appeared first on Experiencing Technology . Related posts: Show installed yum packages by size…

Setup WireGuard VPN on CentOS

WireGuard provides a modern VPN and is advertised as being much easier to install and configure than many other VPN services. Most of this simpler setup procedure comes from the fact that the cryptographic methods used are not as highly Continue reading The post Setup WireGuard VPN on CentOS appeared first on Experiencing Technology . Related posts: Create a luks encrypted partition on Linux Mint…

Reverse proxy with exception for Let’s Encrypt

With many services running in their own container or with their own daemon, the use of reverse proxies is getting more common, and at the same time, the use of SSL/TLS has become a standard. Let s Encrypt is a provider Continue reading The post Reverse proxy with exception for Let s Encrypt appeared first on Experiencing Technology . Related posts: Certificate Transparency and unauthorized…

Download a complete website using wget

In some rare cases you might run into the need to download a complete website onto your local machine for offline usage. There are many GUI tools to do this with loads of options. But did you know that you Continue reading The post Download a complete website using wget appeared first on Experiencing Technology . Related posts: Restrict Linux User to SCP to his home directory Set up apache and the…

Setup Unifi Network Controller on a Raspberry Pi

Unifi access points from Ubiquiti cannot be configured like normal, standalone access points. They require a special network component called Unifi Controller. This controller is a piece of Software that allows configuration and monitoring of all Unifi access points within Continue reading The post Setup Unifi Network Controller on a Raspberry Pi appeared first on Experiencing Technology . Related…

Check Certificate Chain of webserver

Changing the certificate of a webserver sometimes means also changing the intermediate certificate(s). After reloading the webserver, checking that the certificates are ok is important. Checking the webserver s own certificate is not a problem, but checking the intermediate chain is Continue reading The post Check Certificate Chain of webserver appeared first on Experiencing Technology . Related…

Remove stuck emails from postfix mail queue

Sometimes mails queue up in the postfix mail queue for some reason, maybe the destination mailserver does not exist or some emails have a recipient address that is incorrect. This is generally not a problem, but sometimes, a system automation Continue reading The post Remove stuck emails from postfix mail queue appeared first on Experiencing Technology . Related posts: SPF and multiple domain…

How to Recover Deleted Files on Mac

Keeping your Mac clean and free of unwanted files is essential if you want to keep it running like new. But the problem is that users sometimes tend to accidentally delete files that they need later on. Recovering them is Continue reading The post How to Recover Deleted Files on Mac appeared first on Experiencing Technology . Related posts: Rescue Data from corrupt SD card Change file time on…

MacOS Dash alternative for Linux

The handy utility Dash Offline access to documentation is sadly only available for MacOS, but there are compatible alternatives available to let you browse documentation offline on Linux. Zeal offline documentation browser Dash being a MacOS only Application Continue reading The post MacOS Dash alternative for Linux appeared first on Experiencing Technology . Related posts: SPF and multiple domain…

Setup Sieve mail filter with Postfix and Dovecot

A mailbox can get flooded with many emails, some are automatically generated, others are related to orders. Sorting through emails on a daily basis can be a tedious task. Email filters can help automate the most common tasks. One of Continue reading The post Setup Sieve mail filter with Postfix and Dovecot appeared first on Experiencing Technology . Related posts: SPF and multiple domain…

Force Debian console into text mode

Modern server hardware offers a lot of possibilities for administration. One of them is the remote access port, HP s iLO. This remote access port allows to access the server even when shut down and allows a lot of control over Continue reading The post Force Debian console into text mode appeared first on Experiencing Technology . Related posts: Network Interface order with Proxmox Resize Proxmox…

Setup sftp only account using openssh and ssh-key

There are different ways to lock a user into his home directory. A very special case is to grant sftp-only access, which does not require a full chroot jail to be set up. The sftp subsystem built into openssh allows Continue reading The post Setup sftp only account using openssh and ssh-key appeared first on Experiencing Technology . Related posts: Restrict Linux User to SCP to his home directory…

Manage terminal sessions with tmux

In Managing shell commands and processes a utility called screen was introduced, but screen is not the only utility to manage multiple sessions. Another mighty tool to handle multiple sessions is tmux. With tmux terminal multiplexer multiple sessions can Continue reading The post Manage terminal sessions with tmux appeared first on Experiencing Technology . Related posts: SPF and multiple domain…

Rewrite author of entire git repository

In git repositories, commit messages contain a person s email address as an identifier for the user. If the email address used to commit is wrong, you might not want it to be shown in the git repository anymore. In general Continue reading The post Rewrite author of entire git repository appeared first on Experiencing Technology . Related posts: Remove files from git history Git repository cluster…