Setting Up Discourse With Mailgun On A DigitalOcean One-Click Application Server If you're having mail rejected saying it's coming from noreply@discourse.do.co or you're wondering why dmarc isn't set up, this article may help.You may have noticed, or may not have,
Harden Your Docker Deployment With Free Tools With Docker vulnerabilities in the news of late, it makes sense to have a look at hardening your deployments, especially any that are exposed to the Internet.Doomsday Docker security hole article on
Use Center for Internet Security - CIS Benchmarks to Secure Your Systems The Center for Internet Security has free guides that will help you secure your systems. A typical corporate environment may have a broad array of systems, including routers, switches, and firewalls from vendors
Treat Yourself To More Linux Server Knowledge $9.99 coupon for my Udemy Ubuntu Linux Fundamentals course.
How To Update The Message Of The Day (MOTD) On Ubuntu 18.04 I like to have a banner display at login to my servers when I use Secure Shell (SSH) to access them. Once upon a time, this was done by putting a static message
Have A Ubiquiti UniFi Device? Make Sure To Change Your Default Credentials! I was checking the security logs on one of my servers as I often do and noticed attempts to log into SSH using a curious username. My servers are all set up to
How To Check Whether A Reboot Is Required After Updates in Ubuntu Wouldn't it be cool to know whether a reboot is needed after installing updates on your Ubuntu Server without having to log in again to check the Message of the Day (MOTD) to
Top 5 Free Tutorials for Linux Beginners If you've just started using Linux, or haven't yet, but want to, this article may help. It points you to some books, online learning courses, and videos available for free! It will help
Securing Remote Access For Linux I've created a free 7 part video tutorial on how to set up key based authentication for Linux. You'll learn how to: Install OpenSSH Server on your Ubuntu 16.04 LTS server Connect
Free Security Hardening Resources Here are a few resources that will greatly help you in securing your operating system(s) and network for free! STIG Viewer Unified Compliance Framework's (UCF's) Security Technical Implementation Guides (STIG's) provide a
SANS Holiday Hack Challenge Do you want to learn to hack and thereby how to defend web sites? Try the SANS Holiday Hack Challenge. Shout out to Jeff V. (@mrvaughan) for the tweet about this!
Excellent Free Intro To Linux Course On edX If you're not familiar with edX, they have many informative and interesting free online courses. I came across one that really impresses me, and I'm sharing it with you! I'm providing the link
New Course - Ubuntu Linux Fundamentals On Udemy Howdy readers! I've recently released a new course on Udemy called "Ubuntu Linux Fundamentals - Learn Linux Server with Ubuntu" Here's a coupon for 90% off. It's normally $100, but you
Blog Was Offline For A Bit Howdy readers, I apologize, but the blog was down for about 5 days. I had two things going on, and it took me some time to resolve them. The good news is, the
Disqus Comment Broker Suffers Data Breach Disqus, recommended by Ghost and used by many, including this blog, hacked Disqus, a provider of comment features for many blogs, including this one, has announced a hack. Information on people who used
Be Alerted If Your Account Was Compromised - haveibeenpwned.com Millions upon millions of accounts are compromised every year. It is very likely that the account for some web site or online service you use has been exposed by an attack. How can
Camera Lens Scam on Amazon I just came across this article by Ziemowit Pierzycki about how he was scammed out of $1,500 for a camera lens he bought on Amazon. He seems to present clear evidence that
Renewing LetsEncrypt Certificate When Using Cloudflare I recently suffered a little down time on my site due to my letsencrypt certificate expiring and having some difficulty renewing because I'm using CloudFlare's Content Delivery Network in front of my site.
Beginner's Guide To Creating A Ghost Powered Blog Learn how to create your own blog using Ghost, an an open source WordPress alternative. My latest creation. A new course on Udemy. If you're new to blogging, or considering starting one, and
Ghost 1.0 Released It's here! Ghost Publishing Platform Version 1.0. On 27 July, 2017, John O'Nolan announced the release of Ghost Version 1.0. For those of you who haven't heard of Ghost, it is
New Free Course and Certification - KLCP Offensive Security announced a new, free Kali Linux Certified Professional Course and Certification Have you been looking to learn how to Penetration Test? Muts and crew have announced a new, free course and
Using Fingerprints At Food Kiosks? There Are Risks. Brian Krebs breaks story that Avanti, a self-service food kiosk vendor, was hacked. Avanti Markets, a vendor with "micro markets" in many corporate offices throughout the United States, has had a
Nikto - The Web App Scanning Tool - It's Origin One of my esteemed colleagues was familiar with the popular open source web application scanning tools, Nikto, but was unaware of the origin of the name. As I mentioned, Nikto is a popular
How to Safely Check Suspicious Links In case you weren't aware of it, your computer can become infected with malware by visiting an infected site, even if you don't click on anything upon hitting the site. It is called
Upgrading Ghost Here are a few things I learned when upgrading my Ghost server. I tried first simply installing with the instructions provided on ghosts site. I started troubleshooting, and it went downhill fast, so