How do I configure an NTP (Network Time Protocol) client or server under CentOS / RHEL / Fedora Linux to manage the system clock over a network?
The Network Time Protocol (NTP) is used to synchronize a computer's time with another reference time source. Under CentOS / RHEL you can use NTP or OpenNTPD server software. Both package provides client and server software programs for time synchronization.
Install ntp
This article shows how to secure a CentOS server using psad, Bastille, and some other tweaks. psad is a tool that helps detect port scans and other suspicious traffic, and the Bastille hardening program locks down an operating system, proactively configuring the system for increased security and decreasing its susceptibility to compromise.
Create an additional account for Systems Administration
The "adduser" command will create an account.
adduser service
To keep your servers secure a sysadmin needs to monitor them for unusual activity. Monitoring helps to troubleshoot all kinds of problems (system, application level) and to provide warning signs of system abuse or performance issues.
In this post I'll introduce you to web-based tools that will help you keep an eye on your system resources and to display all system related information in easy-to-read formats that make it a snap to see where your performance or security bottlenecks are.
This tutorial will guide you through how to create a simple gallery within Drupal 6 using CCK, Views and a few more custom modules. You can see an example of what the tutorial will create by visiting http://gallery.jamestombs.co.uk/
This tutorial was written with the following versions of Drupal and modules: