You will eventually find yourself trying to fix a network related problem which usually appears in one of two forms. The first is slow response times from the remote server, and the second is a complete lack of connectivity. These symptoms can be...
Recently I was tasked to install a free SSL certificate from LetsEncrypt on a local Linux machine that was running Zimbra Mail Server. The task seemed simple, and I had no problem generating and installing the certificate from LetsEncrypt on Linux...
If you want to share some of your pictures over the internet but you are worried that they might have metadata like location embedded in them, here’s how to strip that data out on Linux.
AppCmd.exe is the single command-line tool for managing IIS 7+. It exposes all key server management functionality through a set of intuitive management objects that can be manipulated from the command line or from scripts. AppCmd enables you to...
When you edit files using Vim, it makes .swp files in the same directory as the files you are editing, and these files contain all changes you've made.
Recently I did security and pen-testing assessment of a web application written entirely in PHP, and some of the biggest issues I’ve come along were in-code vulnerabilities to 💉 SQL injections. To fix this, I recommended using prepared...
In this article, I’m going to talk about the usage of Apache Tomcat’s shutdown functionality and how one can use it to remotely shutdown multiple Tomcat applications. Apache Tomcat has a shutdown functionality that allows you to...
Recently we had a case where we needed to limit the PostgreSQL user activities to only a single connection per user, and in this article I’m going to share the experience with you. The connection limit is applied during the session connection...