Failed to load nf_conntrack module when starting FirewallD
Problem Description Upon starting FirewallD you might encounter the error listed hereunder. This particular behavior was observed on a new installation of Virtualmin/Webmin. Sep 19
Operating Systems
How to enable SSH for GCE
If you’re hosting a Linux box with Google Cloud Engine, SSH will be disabled by default. There are pretty good reasons for this, especially brute
Access to font at xxx from origin yyy has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource
About CORS Cross-origin resource sharing is a way to share libraries and fonts across multiple servers. However, in order to avoid security issues, many servers
Unable to load dynamic library ‘gd’ on Virtualmin server even though php-gd is installed
You might get the following error after having done `yum install php72-php-gd` on a Virtualmin server because of a missing library: PHP Warning: PHP Startup:
Installing Webmin on Linux Mint fails due to missing packages libauthen-pam-perl and apt-show-versions
After downloading Webmin from http://www.webmin.com/deb.html the following errors are returned when trying to install it: user@host:~$ sudo dpkg -i webmin_1.910_all.deb Selecting previously unselected package webmin.
How do make a USB bootable DOS drive to update a PC BIOS using Linux
About PC BIOS Updates PC computers have their BIOS’ updated every once in a while. Sometimes a BIOS update can bring new functionality, and at
How to enable a CRON for WordPress
About CRONs and WordPress WordPress does not have the traditional concept of a CRON. Instead, when any page is loaded, a the CRON routine is
How to automatically redirect all port 80 HTTP requests on a NGINX server to port 443 SSL
About redirecting port 80 (HTTP) requests to port 443 (SSL) on an NGINX server These days all websites require SSL to be installed otherwise the
How to use Fail2ban to block errand 404s on a WordPress/Apache website
About Fail2ban blocking 404s for Apache websites These days hackers scan your website for any known vulnerability. For example, they might run scripts that track
How to see a list of Fail2ban IPs
About Fail2ban IP blocking Fail2ban is fantastic Linux security software that blocks multiple authentication failures on a Linux host. The beauty of this software is