2019/08/14: Some Internet service providers and corporate companies might have blocked most of the ports, and allowed only a few specific ports such as port 80 and 443 to tighten their security. In such cases, we have no choice, but use a same port for multiple programs, say the HTTPS Port 443, which is rarely blocked. Here is where SSLH, a SSL/SSH multiplexer, comes in help. It will listen for incoming connections on a port 443. To put this more simply, SSLH allows us to run several programs/services on port 443 on a Linux system. So, you can use both SSL and SSH using a same port at the same time. If you ever been in a situation where most ports are blocked by the firewalls, you can use SSLH to access your remote server. This brief tutorial describes how to share a same port for https, ssh using SSLH in Unix-like operating systems.
2018/10/11: how to run commands on multiple Linux servers at the same time. We will explain how to use some of the widely known tools designed to execute repetitive series of commands on multiple servers simultaneously.
we assume that you already have SSH setup to access all your servers and secondly, when accessing multiple servers simultaneously, it is appropriate to set up key-based password-less SSH on all of your Linux servers. This above all enhances server security and also enables ease of access.
Once you set up Laverna, it’s easy to use and has just the right features for what I need to do. I’m hoping that the developers can expand the storage and syncing options to include open source applications like Nextcloud and ownCloud.
While Laverna doesn’t have all the bells and whistles of a note-taking application like Evernote, it does a great job of letting you take and organize your notes. The fact that Laverna is open source and supports Markdown are two additional great reasons to use it.
Worried that your server will go down? You should be. Here are some disaster-planning tips for server owners.
Adjusting child processes for PHP-FPM (Nginx)
In this tutorial, we will explain how to install Etherpad on a CentOS 7 VPS. Etherpad is an Open Source online editor providing collaborative real-time editing.
This article will walk through the process of installing LEMP (Linux, Nginx, MariaDB and PHP) environment in Fedora 22 systems to deploy PHP applications.
This tutorial describes how to install LEMP stack on Fedora 23 and it's older versions.
You are running a Linux server at home, which is behind a NAT router or restrictive firewall. Now you want to SSH to the home server while you are away from home. How would you set that up? SSH port forwarding will certainly be an option. However, port forwarding can become tricky if you are Continue reading...
The gentle, dependable workhorse that everyone relies on and nobody owns
In this article we will discuss how to configure postfix so that it logs mail's subject in the maillog (/var/log/maillog)