today's howtos

posted by Roy Schestowitz on Jan 31, 2025

• Network World ☛ How to see file permissions on Linux

  In this Linux tip, we look at file permissions on Linux in two ways.

• How to Setup Syslog Server on Ubuntu Server 24.04​

  Want to set up Syslog Server on your Ubuntu 24.04? It may sound like a task meant to be performed by some professional IT person, right? No, even a beginner can configure Syslog Server if he or she is managing multiple servers because the process of installing it is simple.

• Linux Host Support ☛ What is the ERR_CONNECTION_CLOSED Error and how to fix it?

  This blog post is about the ERR_CONNECTION_CLOSED error and the possible solution to fix and avoid it. The “err_connection_closed” message tells that the local computer or mobile phone browser cannot make a connection, and something prevented the website from being inaccessible.

• Navigating GNU/Linux Container Challenges With Scott McCarty [Ed: Red Hat sponsored site as Red Hat megaphone]

  < Scott McCarty, principal product manager for RHEL Server at Red Hat, discusses the evolving landscape of GNU/Linux containers. He talks about how containers have matured from hype to mainstream adoption, yet still present new use cases, particularly in Hey Hi (AI) and WebAssembly.

• Linux Cloud VPS ☛ Email protocols: What is the difference between SMTP, POP3, and IMAP?

  The SMTP (Simple Mail Transfer Protocol) is an application layer and connection oriented protocol. It is used to send and receive mail messages by mail servers and other transfer agents. SMTP is a mail delivery and not a mail retrieval protocol. Therefore, it delivers an email to an email provider’s mail server. The SMPT protocol defines a process for exchanging data between an email client and a mail server. Email client is a software application that is used to access, manage, and send emails by the client. It provides users with a user interface for better viewing and organization of the emails.

• Red Hat Official ☛ Monitoring Red Hat Ansible Automation Platform using Performance Co-Pilot

  To display system metrics stored in an archive, starting from 14:00, in an interactive manner similar to the top tool: [...]

• RIPE ☛ Using API Keys in the RIPE Database

  We are introducing API keys as an easy to use alternative to MD5 hashed passwords, which we plan to deprecate later this year. For now, API keys can only be used in the RIPE database, but we intend to offer them in other RIPE NCC services in the future.

  For anyone reading this who only makes updates using the web interface - you don’t need API keys! For everyone else, in this article, I'm going to show you the new API keys feature of the RIPE database.

• SANS ☛ PCAPs or It Didn't Happen: Exposing an Old Netgear Vulnerability Still Active in 2025 [Guest Diary]

  One thing I’ve learned about cybersecurity, particularly during my time here at the Internet Storm Center is this: If you don’t capture detailed network data (like PCAPs), you can easily miss the full picture of an attack, even with the most aggressive logging practices.

  One of the attack observations I submitted on January 12th detailed an older vulnerability that uses HTTP GET requests, attempting to perform unauthenticated OS command injections on some legacy Netgear devices, targeting the ‘setup.cgi’ script. I was curious as to which Netgear devices might be involved, and some research led me to a few publications on exploit-db.com, which identified specifically the DGN1000 with firmware versions before 1.1.0.48, and the DGN2200v1 (all firmware versions) modem/router models.[2][3] Both of these models are shown to be “end of service” on the Netgear website. [4][5] There was no CVE mentioned, but a few days later I found out from another post on the 15th of January here at the Internet Storm Center, written by Dr. Yee Ching Tok, Ph.D., ISC Handler: [...]

• Andy Bell ☛ CSS nesting: use with caution

  I’ve been doing this CSS thing for over 15 years and I’ve seen a lot of change in that time. A lot of the time, I see a new CSS feature and immediately get excited about how helpful it’s going to be for me and the team in the long term. A good example of that is text-box-trim.

  There are features that fill me with dread though and right at the top of that list is native CSS nesting. I know that opinion will be rather unpopular, but the whole deal of the site is front-end education for the real world, so I’m here to provide that for you today.

• Mythic Beasts Ltd` ☛ The Death of Email Forwarding

  Over the years there have been various different approaches to authenticating email senders, but it’s a continual arms race. Spam remains a problem, as does the plethora of scams and fraud that are enabled by the ease with which email can be forged.

• idroot

  • ID Root ☛ How To Install Samba on Linux Mint 22

    Samba is a powerful open-source software suite that provides seamless file and print services to SMB/CIFS clients. This guide will walk you through the process of installing and configuring Samba on Linux Mint 22, enabling you to share files easily across different operating systems, including backdoored Windows and macOS.

  • ID Root ☛ How To Install Apache Tomcat on CentOS Stream 10

    In this tutorial, we will show you how to install Apache Tomcat on CentOS Stream 10. Apache Tomcat is a widely used open-source implementation of the Java Servlet, JavaServer Pages, and Java Expression Language technologies. It serves as a robust platform for running Java applications.

  • ID Root ☛ How To Install Caddy Web Server on Fedora 41

    In this tutorial, we will show you how to install Caddy Web Server on Fedora 41. Caddy is a modern web server that is known for its simplicity and automatic HTTPS capabilities.

  • ID Root ☛ How To Install AppImage on CentOS Stream 10

    In the ever-evolving world of GNU/Linux software distribution, AppImage has emerged as a powerful and user-friendly solution for running applications across various distributions. This comprehensive guide will walk you through the process of installing and managing AppImage on CentOS Stream 10, providing you with the knowledge and tools to harness this versatile technology.

  • ID Root ☛ How To Install GParted on Manjaro

    GParted, short for GNOME Partition Editor, is a powerful and user-friendly tool for managing disk partitions on GNU/Linux systems. For Manjaro users, installing GParted can greatly simplify the process of creating, resizing, and managing partitions. This comprehensive guide will walk you through the installation process, usage tips, and alternatives to GParted on Manjaro Linux.