Block Geo-Region List of IPs with ufw in Linux | Say for instance you wish to block IP ranges by region such as blocking China. This is easy to do with one spiffy website and ufw in Ubuntu or other Linux distros. I’ll show you how!
How to Run cron job as Regular non-root User | Instead of putting all of your server’s cron jobs as root, consider having them in a regular user’s crontab. This is better for security reasons as well as good general practice. I’ll show you how!
What are the differences in closed, open, and filtered ports on a firewall? | Using nmap or other tools, you may have seen results that say open, closed, or filtered. Here is some insight into what this all means!
Google Authenticator Two-Factor SSH Authentication for Debian Wheezy | Debian does not provide a package for Wheezy to use Google Authenticator as a pam module. However, you can grab and install the Jessie (Debian testing) deb. Here are some steps!
Configure nginx for PFS and ssllabs.com A Rating | Here is a quick configuration for nginx to achieve an ‘A’ score on ssllabs.com. This example is from Debian Wheezy using OpenSSL 1.0.1e and nginx 1.2.1 and also enables Perfect Forward Secrecy as added security against the NSA or other snooping!