lfd relies on /syslog auth.log/ /messages secure/ As you can read in the CSF readme.txt file any end- user on the server can maliciously trigger applications that monitor the logs of syslog/rsyslog. Red Hat family distributions (CentOS and Fedora) use /var/log/messages and /var/log/secure where Debian-family distributions use /var/log/syslog and /var/log/auth.log. The option RESTRICT_SYSLOG disables all…
mod_cloudflare for Apache for Logging Real Visitor IP Addresses Cloudflare acts as a proxy and can help you speed your website, no matter static or dynamic. After switching to Cloudflare, you will notice that all your website visitors’ IP addresses appear to be coming from Cloudflare IP addresses. Here mod_cloudflare for Apache httpd comes in…
Advantages of Changing SSH Port First, I want to explain the reasons behind changing the ssh port of a server. Why changing ssh port when you have a strong password and/or a certificate? Additionally, it is always a good advice to use iptables rules to limit brute forcing attacks. For example, you can limit login…
SSH Hardening Techniques These are the top practices to harden ssh. In this article I am going to list the best and most important open ssh server security practices. SSH protocol is the best option when it comes to remote login, making backups, remote file transfer and so on. It is a must have on…
Password Login Belongs to the Past with Public Key Authentication Public key authentication is an easier and more reliable method to connect to the Secure Shell Server SSH compared to the old- fashioned password-based login. Keys are basically less prone to brute-force attacks. If you want to force users to use keys add the line…
Why Find The Largest Files In Linux Before starting with the tutorial let me clarify why will somebody need finding the largest files in Linux. There could be several reasons. All the reasons boil down to log files. 1. Your server could have been a target of brute-force attacks. In this case /var/log/btmp file grows…
How to install and remove software packages in Linux The scope of today’s article is installing and removing certain software packages in Linux using both high and low level package management tools. Installing software packages, including updates, is one of the most common tasks every system administrator performs. The main reason behind this is that…
DIY graphic design is among of my recent business ventures. I figured out that I need fancy fonts for GIMP to make my work more aesthetically pleasing. My first choice fall upon Google fonts because they are free to obtain and suited my needs. Using The Font Manager To Add Fonts There are quite a…
You could need to restart MySQL server after installing, upgrading, or making some changes in my.cnf file in Linux. The quickest way to this is by typing on the command line terminal. No fancy graphic interface. MySQL Server Restart General Syntax The syntax is as follows. On the Linux or OS X type the following on…
File (directory) ownership is the foundations of every operating system. This post will teach you how to change file(s) ownership in Linux using the command chown. There are different scenarios when you would need to change the ownership of a file using either chown or chgrp. Note: you can change group ownership with the command…