Install Rsync and Lsync on CentOS, Fedora or Red Hat

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Have you ever needed to copy files from your local computer over to your web server? You may have previously used File Transfer Protocol (FTP) applications for this task, but FTP is prone to being insecure and can be challenging to work with over the command line. What if there was a better way? In this tutorial, we’ll be covering two popular utilities in the Linux world to securely assist in file transfers, rsync and lsyncd. We’ll show you how to install and use both in this article. Let’s dig in!

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Protecting against CVE-2018-14634 (Mutagen Astronomy)

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There is a new exploit, rated as 7.8 severity level,  that affects major Linux distributions of RedHat Enterprise Linux, Debian 8 and CentOS named Mutagen Astronomy. Mutagen Astronomy exploits an integer overflow vulnerability in the Linux kernel and supplies root access (admin privileges) to unauthorized users on the intended server. This exploit affects Linux kernel version dating back from July 2007 to July 2017.  Living in the kernel, the memory table can be manipulated to overflow using the create_tables_elf() function. After overwhelming the server, the hacker can then overtake the server with its malicious intents. Continue reading “Protecting against CVE-2018-14634 (Mutagen Astronomy)”

Tutorial: An Introduction to Managing a Linux Server with systemd

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What is systemd?

Systemd is the System Management Daemon, which provides a standard for controlling the Linux boot process. It is named per the UNIX convention of adding ‘d’ to the end of daemon’s name. Systemd is intended as a drop-in replacement for the very common init start-up scripts for the boot process (which is also referred to as System V or SysV).

Though there is some debate regarding the benefits of systemd, the advantages do include: Service Reporting (failed? suspended? error?), Process Monitoring (kills user processes at logout), and Parallel Processes (multiple services are able to start at same time, improving boot times).

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