The rsync utility can backup files, synchronize directory trees, and much much more, both on the local machine and between two different hosts—via push and pull. Here is how to tame it.
How to upgrade the Linux kernel in Fedora 28/29 quickly and easily
As zero-day exploits become increasingly common, keeping the kernel up to date is a top priority.
In CentOS 6.x/7.x and RHEL 6x./7.x, upgrading the Linux Kernel is a painful procedure which requires about a dozen steps. On Fedora, all it takes is a time-saving two-liner. You don’t need to concern yourself with the configuration of the grub boot manager, which is a frequent source of trouble on CentOS and RHEL.
Fixing your Web Server’s Security Headers: From Hall of Shame to Hall of Fame
[Updated 2018-06-10] This post explains how to set up robust security headers in NGINX to protect your web application from malicious payloads and other forms of attacks. Choose your HTTP(S) headers wisely.
How to install the most recent version of OpenSSL on Windows 10 in 64 Bit
In the age of cyber warfare, being paranoid is the only reasonable attitude and that means, among other things, being paranoid about software updates.
A fix for Spectre & Meltdown: update your Linux kernel in place (running CentOS/RHEL 7 or above), and live happily ever after
If you launch an instance from the official CentOS or RHEL 7.x AMI on AWS, you will be running kernel 3.1 as of this writing. That’s not a good idea. You can easily take advantage of improved security features of newer kernels that are already available in a stable release. The renowned Linux kernel maintainer Greg Kroah-Hartman released the Linux Kernel 4.14.15, which includes important fixes for Spectre & Meltdown. Here is how to update your Linux kernel from 3.1 to 4.16.11 in place.
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