In today’s cybersecurity landscape, where brute force attacks and unauthorized intrusions are constantly on the rise, monitoring who accesses our servers has become an essential practice. The SSH (Secure Shell) protocol, while designed to be secure, remains one of the most common attack vectors against Linux servers. The Problem: SSH Access Visibility System administrators frequently […]| System Administration
Live sharing a terminal session to another (shared) host over SSH in| /dev/posts/
While looking at the OpenSSH ssh_config manpage, I found the| /dev/posts/
Last week, a backdoor was discovered in xz-utils. The backdoor processes commands sent using RSA public keys as a covert channel. In order to prevent anyone else from using the backdoor, the threat actor implemented a cryptographic signature check on the payload. I have seen a number of people claim that this would necessarily result in an obviously invalid RSA public key, or at least one with no corresponding private key. This is incorrect, and someone nerd sniped me into proving it.| rya.nc
Our team has grown! This month, Alex Brandsen started at the TDCC-SSH as the Interoperability Project Lead. His role is leading our OSNL-funded project to enhance the digital readiness and data interoperability practices among researchers. Alex is a computational archaeologist with a background in machine learning and web development. His previous work bridges the gap […] The post Welcome to new Interoperability Project Lead - TDCC SSH appeared first on TDCC.nl.| TDCC.nl
Consider the following scenario: you are developing a Python package on a remote computer without a screen (e.g. an HPC cluster).| nielscautaerts.xyz
I had a seemingly simple problem, connect over SSH to remote computer and lock the screen. Simple Google search for "gnome lock screen" yielded a plenty of results all of which revolving about using command gnome-screensaver-command -l. First of, the package gnome-screensaver isn't installed by default on Fedora, meaning it isn't used there. Then, after installing it I got the| Everything about nothing
Troubleshooting, adoption, and maintenance via command line Accessing UniFi devices via SSH is one of the most powerful ways to troubleshoot issues, inspect device settings, […] The post UniFi SSH Commands Guide appeared first on Blog of Cody Deluisio.| Blog of Cody Deluisio
Sometimes UniFi devices fail to appear in the controller’s interface or cannot be adopted using the standard discovery methods. In those cases, manually adopting a […] The post How to Adopt a UniFi Access Point Using SSH appeared first on Blog of Cody Deluisio.| Blog of Cody Deluisio
In this first Azure Arc Remote Management focused blogpost, let’s cover the OpenSSH extension and how it can be used to get a remote PowerShell connection over SSH and even a Remote Desktop Session, all without any direct network connectivity. The best part: It costs absolutely nothing! Join me in this adventure to more securely […] The post Modern Server Management with Azure Arc – Remote Management Pt.1 (SSH/RDP) appeared first on Mindcore Techblog.| Mindcore Techblog
The Google Authenticator is an open-source module that includes implementations of one-time passcodes (TOTP) verification tokens developed by Google.| How to Setup Two-Factor Authentication For SSH In Linux
So you have set up your Raspberry Pi as a home server and everything works as intended. But what if the SD card fails and all the data you stored on your Raspberry Pi is suddenly lost forever? All storage devices containing important data need to be backed up on a regular basis. And this … Continue reading Simple Raspberry Pi Backup| Abstract Expression
AhnLab SEcurity intelligence Center (ASEC) monitors attacks targeting Linux servers that are inappropriately managed using honeypots. One of the representative honeypots is the SSH service that uses weak credentials, which is targeted by a large number of DDoS and coinminer attackers. ASEC has identified cases where Linux servers were attacked to install proxies. In […]| ASEC
We are happy to share that our Annual Report 2024 has been published on Zenodo: https://zenodo.org/records/15672537 The OPERAS Annual Report provides a detailed record of the activities of OPERAS AISBL and OPERAS as a...| OPERAS
The QIDI Tech Q1 Pro, QIDI Tech X-Max 3, and QIDI Tech X-Plus 3 are powerful and capable… The post QIDI Tech Series- Free Klipper Remote Access, Apps, And AI appeared first on OctoEverywhere Blog.| OctoEverywhere Blog
The QIDI Plus4 and QIDI Q1 Pro are powerful and capable 3D printers, a great choice for newcomers… The post QIDI Plus4 – Free Klipper Remote Access And AI appeared first on OctoEverywhere Blog.| OctoEverywhere Blog
Learn how to SSH into your 3D printer using MobaXterm for Windows. This works for Klipper, OctoPrint, Creality, QIDI, and other 3D printers!| OctoEverywhere Blog
Discover the power of Git’s conditional includes to automatically switch between different developer identities, email addresses, and signing keys based on your project directory structure.| Eric Mann's Blog
Over the last few months, I upgraded my Debian machines from| Feeding the Cloud
Breaking down the limitations of SSH key-based authentication and showing how SSH certificates enable modern, manageable infrastructure access.| Infisical Blog
This chapter is all about setting up the software needed to run a WordPress site. First we’ll install Nginx and configure it with better settings for our use. Next we’ll install PHP and its packages required by WordPress and configure PHP-FPM. Then we’ll install WP-CLI and MariaDB. The post Install Nginx, PHP 8.3, WP-CLI, and<span class="no-widows"> </span>MySQL appeared first on SpinupWP.| SpinupWP
You can find many tutorials online on how to use ssh-agent or ssh-ident correctly. This is a short and simple two line fix aimed at a specific use i.e. a single connection to a jumphost. Add this to your .bashrc So now when you type jumphost: And from the jumphost you can ssh connect to […] The post Simple jumphost ssh-agent config appeared first on Jan van den Berg.| Jan van den Berg
Confession time: I don’t fully understand how terminals, shells and SSH really work (and my guess is you don’t either). And I don’t mean the cryptography behind SSH. I mean how SSH and the terminal — and the shell for that matter — interact with one another. I recently realized that even though I’ve been […] The post I don’t understand terminals, shells and SSH appeared first on Jan van den Berg.| Jan van den Berg
If you cannot connect to a remote server from your Chromebook with SSH keys and you get this error: Here is the tip: add an enter to your private key file! Yes really! I spent way too much time figuring this and only found the solution when I stumbled on the solution here. The post Fix for when your SSH keys are not working on your Chromebook appeared first on Jan van den Berg.| Jan van den Berg
Everything federal employees do in their work capacity is potentially subject to a Freedom of Information Act (FOIA) request. Use your personal email — or GitHub account — for work purposes, and your not-at-all-government-related communications could be exposed to the world. That's how I ended up with two GitHub accounts. And it's also why I found myself typing "using multiple SSH keys GitHub" into Google. Why risk …| Los Angeles WordPress & web developer - Webinista, Inc.
While cloning a repository from an organization, I encountered an SSH error that I've never seen before. It's something related to SAML SSO. I managed to solve it, so I'm documenting the steps here. Hope it helps you too!| Lj Miranda
English We are glad to welcome the National and University Library in Zagreb as a new ordinary member of the OPERAS community in 2025. The National and University Library in Zagreb (NSK) is the...| OPERAS
We are glad to welcome the University of Bielefeld as a new ordinary member of the OPERAS community in 2025. Bielefeld University, especially the Library, is a pioneer of the Open Access movement in...| OPERAS
Explore the differences between SSH authentication methods and why SSH certificates are the superior choice for securing your servers.| Infisical Blog
Photo by Kvistholt Photography on Unsplash It is common to run some commands via the postgres account as it is the de facto PostgreSQL super user. This means that if you're running these commands remotely, you'll need to chain sudo: ssh pg-host sudo -i sudo -u postgres ... If you're in char| Ian's notes
SSH tunneling is a secure alternative to third party tools like Cloudflare Tunnels or ngrok. In this post, I show you how to set up a reverse SSH tunnel to a Kubernetes service running in a private…| Vuyisile Ndlovu
Are support bots helpful? They may be. But they are not quite there.| Petros Amoiridis
We’ve just provisioned a new Ubuntu 24.04 LTS droplet in Digital Ocean. What to do next?| Jakub Jarosz
Rafael Sadowski| rsadowski.de
Если вы регулярно подключаетесь к нескольким удаленным системам по SSH, запомнить все эти IP-адреса, различные имена пользователей, нестандартные порты и другие параметры командной строки будет| PHP Portal
Instead of copying (i.e. via scp or rsync), you can sudo cat the remote file, and pipe it (since pipes cross the SSH boundary) to a local file: For example: Happy copying!| Ian's notes
Utilizing the Erlang ecosystem to set up a quick SFTP server in Elixir.| bitcrowd blog Blog
A commendable attack data dump, lightly analyzed.| That grumpy BSD guy
| pspaul's blog
According to the International Society for Quality in Healthcare, accreditation is a process "in which trained external peer reviewers evaluate a health care organization’s compliance with pre-established performance standards. Endorsement of healthcare simulation programs is an assurance that a program meets the standards and requirements set forth as guidelines. Accreditation and Endorsement are methods of| HealthySimulation.com
This post shows how to enable password-less SSH login using SSH Keys| Vuyisile Ndlovu
Sometimes we are given access via ssh to nodes that do not have, for policy or technical reasons, access to the internet (i.e. they cannot make outbound connections). Depending on the policies, we may be able to open reverse SSH tunnels, so things are not so bad. Recently I discovered that OpenSSH comes with a SOCKS proxy server integrated. This is probably a well known feature of OpenSSH but I thought it was interesting to share how it can be used.| Think In Geek
Are you aware that Git commits and tags may be signed using OpenSSH? Git signatures may be used to improve integrity and authentication of our software supply-chain. Popular signature algorithms include Ed25519, ECDSA and RSA. Did you consider that these Continue reading OpenSSH and Git on a Post-Quantum SPHINCS+→| Simon Josefsson's blog
Healthcare Simulation Standards promote, guide, and maintain a safe, competent clinical practice. Professional clinical standards can be set through state and national licensure boards, certification boards, accreditation, and credential organizations. The purpose of these clinical simulation standards is to promote best evidence-based practices for all stakeholders to promote learning and professional development in a psychologically| HealthySimulation.com
The Certified Healthcare Simulation Operations Specialist (CHSOS) and Certified Healthcare Simulation Operations Specialist - Advanced (CHSOS-A) are technical certifications provided by the Society for Simulation in Healthcare (SSH). As in the case of many medical specialties, certification helps distinguish a professional as an expert in the field. In healthcare simulation, a few certifications help identify| HealthySimulation.com
Certification in healthcare simulation is similar to other certification and is the process to obtain, verify, and assess the qualifications of a practitioner. In accordance with the International Society for Quality in Healthcare, accreditation is a process "in which trained external peer reviewers evaluate a health care organization’s compliance with pre-established performance standards. This HealthySimulation.com| HealthySimulation.com
When you’re away from home it’s not only convenient, but often necessary to connect back to your machines. This could be to connect to a remote VSCode instance, run a backup, check on a process, or to debug a problem. SSH can also be used to port-forward services, or to copy files with scp or rsync.| inlets Pro
The general best practice is to disable SSH on your ESXi host by default and if/when you need access, you can turn it on temporarily and disable it when you have completed your task. For users that…| WilliamLam.com
This tutorial will show how to enable SSH on your Synology NAS and how to SSH into a Synology NAS! Then, how to use the terminal to connect!| WunderTech
Managing different SSH Keys for different Hosts is well-understood. But different keys for the same host (e.g., github.com), based on which Organization we'r...| stevenharman.net
Why I'm trying self hosting| nielscautaerts.xyz
I have a small raspberry Pi server at home that runs a few services like gitea (my own personal github alternative) and nextcloud (my own self-hosted google drive alternative).| nielscautaerts.xyz
Companies tend to restrict access to internal systems to approved devices on the internal network.| nielscautaerts.xyz
The particularities of setting up a K8s cluster with kubeadm on a laptop| Niels Cautaerts
Deploying this site to the server with Github Actions| Niels Cautaerts
Learn more about the Society for Simulation in Healthcare and the latest healthcare simulation news, jobs, resources, products, research and more...| HealthySimulation.com
The Certified Healthcare Simulation Educator (CHSE) and Certified Healthcare Simulation Educator - Advanced (CHSE-A) are certifications available from the Society for Simulation in Healthcare (SSH). As in the case of many medical specialties, certification helps distinguish a professional as an expert in the field. In healthcare simulation, there are a few certifications that help identify| HealthySimulation.com
OPERAS will host an online session on “Fostering Trust in the Digital Sphere: A Multi-Stakeholder Approach Introduction” at the Science Summit during the 79th United Nations General Assembly. The session on 11 September 2024,...| OPERAS
One of the most powerful communications tools available is ssh. Pretty much the only version on Linux is OpenSSH, and most of the versions I've come across on other platforms are derived from it. I assume you know that, and I assume you also know that the best way to use it is with pre-shared keys so that you don't have to worry about passwords. Unfortunately, that isn't always an option.| Mad Man with a Compiler
If you've played with networking at all, you should be familiar with 127.0.0.1 being localhost. If you look closely at the network settings, you'll see that this is on a loopback device, and it's configured as a /8 network, not just that one IP address. That means any IP address in the range of 127.0.0.0 through 127.255.255.255 goes to the loopback device. Typically your hosts file only uses one of those addresses, namely the aforementioned localhost.| Mad Man with a Compiler
I have several backup servers that run the excellent rsnapshot software, which uses Secure Shell (SSH) for remote access. The SSH private key of the backup server can be a weak link in the overall security. To see how it Continue reading Unattended SSH with Smartcard→| Simon Josefsson's blog
We at the TDCC-SSH are excited to share with you the project ideas that will move forward in our process for the NWO TDCC Challenge call. We received over 20 ideas for collaborative projects, shared the complete list of submissions transparently, and organized public presentations for on three separate days. Now, our Assessment & Selection Committee has completed its review of the ideas.| TDCC.nl
The “Take 5 with PALOMERA partners” is a blog series featuring the members of the PALOMERA project; you can get to know them with 5 questions and a quick read! The PALOMERA project is dedicated to...| OPERAS
We are happy to share the final batch of project idea submissions that we received. As part of our transparent, community-involving process, the project ideas will be shared through our website. Additionally, all submitters will also publicly present their ideas in short, dedicated online meetings (30 minutes per project idea).| TDCC.nl
First I would like to describe the normal procedure to install TYPO3 with composer:| zazu.berlin– FILM + DIGITAL sagt ...
Über ein Monat ist vergangen und wir wissen immer noch nicht viel über die Hintergründe und Hintermänner der xz-Backdoor. Dies, obwohl die Lücke im besten| Das Netz ist politisch
OpenSSH tunneling guide| www.gabriel.urdhr.fr
Foo over SSH| www.gabriel.urdhr.fr
If you are using ssh private/public keypair authentication, and get an almost immediate error like below: $ ssh -i id_rsa.pub myuser@a.b.c.d -p 22 Received disconnect from a.b.c.d port 22:2: Too many authentication failures Disconnected from a.b.c.d port 22 Then try again using the ‘IdentitiesOnly‘ option. ssh -o 'IdentitiesOnly yes' -i id_rsa.pub myuser@a.b.c.d -p 22 The ... Bash: fixing “Too many authentication failures” for ssh with private key authentication| Fabian Lee : Software Engineer
If ssh private/public keypair authentication is failing, check the logs on the server side for permission errors. On Debian/Ubuntu check for these errors in “/var/log/auth.log”. # error if authorized_keys file has too wide a permission for others Authentication refused: bad ownership or modes for file /home/myuser/.ssh/authorized_keys # error if .ssh directory has too wide a ... Bash: fixing SSH authentication error “bad ownership or modes for file/directory”| Fabian Lee : Software Engineer
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OpenSSH| The Grumpy Troll
Free and unlimited remote access, AI print failure detection, notifications, and more. Our guide also includes directions for SSHing into your Sidewinder X4.| OctoEverywhere Blog
Technical analysis of CVE-2024-31497, a flaw in PuTTY's P-521 ECDSA implementation which can be leveraged to compromise user's private keys.| LRQA Nettitude Labs
После устройства на новое место работы мне был выдан корпоративный email и доступы в закрытый репозиторий компании, который, само собой, не совпадает с вашим личным| Злой полицейский
Last week, the Internet dodged a major nation-state attack that would have had catastrophic cybersecurity repercussions worldwide. It’s a catastrophe that didn’t happen, so it won’t get much attention—but it should. There’s an important moral to the story of the attack and its discovery: The security of the global Internet depends on countless obscure pieces of software written and maintained by even more obscure unpaid, distractible, and sometimes vulnerable volunteers. It’s an u...| Schneier on Security
Kaspersky analysis of the backdoor recently found in XZ, which is used in many popular Linux distributions and in OpenSSH server process.| securelist.com
A security vulnerability was discovered at GitHub back in 2012 that made it possible for an attacker to add new SSH keys to arbitrary GitHub user accounts. Although there was no known malicious activity using this exploit, they took the responsible step to email all their users that have SSH keys associated with their account … Continue reading GitHub SSH Public Key Fingerprint Checking The post GitHub SSH Public Key Fingerprint Checking appeared first on protodave.| protodave
I love| blog.benwinding
A brief look at the history behind the opposing styles of quick-return and single-return in functions.| blog.benwinding
The following tutorial shows the easiest way I’ve found to deploy pretty much any application to another machine! Server Prerequisites: ☑ $ git pull the app from the server ☑ $ ssh user@server get into the server ☑ pm2 or apache2 or nginx … some kind of server is running| blog.benwinding
It’s been a hot minute, but I thought I would start documenting little things I learn while going through the Offshore labs via HackTheBox. This is a simulated Active Directory forest with simulated users and real life scenarios. Your point is to hack your way though by any means, and get all the flags! It’s an added cost to the otherwise free lab set up, but definitely worth the price.| anubissec.github.io
A couple years back we wrote a guide on how to create good OpenPGP/GnuPG keys and now it is time to write a guide on SSH keys for much of the same reasons: SSH key algorithms have evolved in past years and the keys generated by the default OpenSSH settings a few years ago are […]| Linux-natives
I won't go into specific cases in this blog post. This is a general guide on how to gather the necessary information that will help you to get your problem fixed. In this post, I'll use a Linux client| ITTavern.com
There a multiple use cases to run a script on login. Configuration, starting services, logging, sending a notification, and so on. I want to show you different ways to do so. Example script The examp| ITTavern.com
To make it quick, I wish I had known about port forwarding and tunneling earlier. With this blog post, I try to understand it better myself and share some experiences and tips with you. Topics: use ca| ITTavern.com
Disclaimer: Please read the whole post before you start. This will help you avoid a lock-out Generating a secure key pair SSH keys use asymmetric cryptographic algorithms that generate a pair of se| ITTavern.com
As part of actuated, we needed to debug and explore VM images for GitHub Actions via SSH. I'm now making that available to my GitHub Sponsors for free.| Alex Ellis' Blog
R is a great tool for analysing data with an intuitive and interactive programming language. There are a number of limitations with an interactive programming language compared to compiled languages, such as higher memory and processing requirements. One way of overcoming these requirements is to use cloud computing, such as Amazon EC2. The Bioconductor group has an Amazon Machine Image with the latest version of R and RStudio; however, there is a major security hole in the default setup that...| Tore Opsahl
New Sysadmin? Learn how to log into a live server using SSH (Secure Shell) so you can examine logs, modify configuration files, diagnose performance problems, update software, and lots more.| SpinupWP
You can now expose SSH, HTTPS and Kubernetes through a single tunnel from your homelab. I’ll show you how.| inlets.dev
Access all your remote SSH servers on your network from a single TCP tunnel using the new sshmux feature in inlets-pro 0.9.28.| inlets.dev
At times, you may need to edit or create new files on a remote server via SSH. Learn how to access a remote server via SSH and how to edit files with the Nano text editor.| SpinupWP
In this post I’m demonstrating how you could use Hashicorp’s Vault TOTP generator and an authenticator to connect to a dynamic ssh port. This is mostly a proof of concept and not a production grade solution, so use at your own risk. What’s TOTP? It’s a Time-based One Time Password. TBOTP is probably too ugly of an acronym to have gained widespread use. I don’t know, I didn’t coin it. ¯\_(ツ)_/¯| Chris Bergerons Tech Blog
The sshd-keygen-wrapper tool, located within macOS Privacy settings, has garnered attention from users, particularly when they discover it in the Full Disk Access section of their Privacy preferenc…| applehelpwriter.com
Passwords and pass-phrases are an authentication method; they authenticate the user as the only one, at least in theory, who knows the correct phrase. With encryption tools, they serve an additional purpose; they either generate the symmetric key directly through one or more hashes (eg. cryptsetup), or they decrypt an existing stored key (eg. LUKS, GnuPG).| and1equals1.blogspot.com
