Enable Automatic Updates – Fedora/Red Hat/CentOS + Bonus Tip

As a reminder, Red Hat Enterprise Linux is based on Fedora Linux and CentOS is a 100% compatible rebuild of Red Hat Enterprise Linux. With that out of the way, lets move on. Linux server security is crucial to Linux server administration. Part of keeping Linux servers secure, is to install security updates shortly after they […]

How to Enable Unattended Upgrades on Ubuntu/Debian

Linux server security is of critical importance to sysadmins. One central part of keeping Linux servers secure, is by installing security updates in a timely manner. Too often there are compromised servers on the internet due to pending security updates waiting for a manual update. On both Ubuntu and Debian, the unattended-upgrades package can be configured […]

How to Set Up an Nginx Certbot

If you are looking to automate the process of obtaining, installing, and updating TLS/SSL certificates on your web server, then Let’s Encrypt is a very useful tool. It is a certificate authority (CA) that comes packaged with a corresponding software client, Certbot, that will automatically install TLS/SSL certificates. This means that you can run encrypted HTTPS […]

IoT Security: 42 Top Internet of Things Security Solutions

After researching IoT security. I’ve decided to maintain a list of companies which offer IoT (internet of things) security tools and solutions. Feel free to share your solutions, feedback and tips for securing IoT devices. This list will continue to grow in the coming days, week, months and beyond. In the aftermath of the 2016 DDoS […]

How to Convert OpenSSH keys to Putty (.ppk) on Linux

PuTTYgen is an key generator for creating SSH keys for PuTTY. PuTTYgen is comparable in certain respects to the ssh-keygen tool. PuTTYgen can be used to create public and private key pairs (in .ppk file format). In addition, PuTTYgen can also be used to convert keys to and from other formats. On Windows PuTTYGen is a graphical tool. A command-line version is available for […]

Generating Secure Passwords for your Linux Server

Very often sysadmins will have to setup new servers or harden existing server passwords during security audits. As a result, secure passwords have to be chosen for root, cPanel accounts, ftp, etc. There are many composite practices that make a server secure, but often overlooked is using secure passwords. Notice that SSH or MySQL root […]

Patch a thing: Securing Internet of Things (IoT) devices

July 16th 2019 update: List of IoT (Internet of Things) security solutions Today, I spent some time researching IoT security. At the end of this post, I’ve listed companies – all of which are new to me – which offer IoT security solutions. Feel free to share your solutions, feedback and tips for securing IoT devices. […]

3rd DDoS attack today, beginning of a new era

4th Update: 20 min video response by Dale Drew, the chief security officer of Internet backbone company Level 3. 3rd Update: More details emerging “that some of the infrastructure responsible for the distributed denial-of-service (DDoS) attacks against Dyn DNS were botnets compromised by Mirai malware.” says Flashpoint. I’ll continue to update with additional information and important links. 2nd Update: 3rd Attack […]

WordPress Plugin being exploited. Delete inactive plugins

For the past few days an increasing number of WordPress websites have been infected by attackers exploiting a vulnerability in the WordPress plugin: WP Mobile Detector. The plugin with over 10,000 active installs was at one point removed completely from the WordPress repository with no patch available. However, as of today the WP Mobile Detector plugin has been patched […]

OpenSSL Security Updates – Severity: High

Update: June 13th 2019 – Remember the OpenSSL project has a budget of less than one million USD per year and relies primarily on donations. With this in mind, it’s very important that you keep tabs on OpenSSL news and the OpenSSL newslog, and be sure to upgrade anytime there is a new release. A new set […]