Saturday, November 28, 2009

Nagios For Linux Security

Security is extremely vulnerable if a computer is connected to the network, especially online via the internet. Dangers that lurk usually happens without conscious computer owners, therefore, many security experts are trying to assess and examine the gaps that can be taken by a data thief. The best step is to ready an umbrella before it rains.
One of the software can be used to monitor traffic to our computer data is Nagios.
What is Nagios?
Nagios® is a system and network monitoring application. It watches hosts and services that you specify, alerting you when things go bad and when they get better, was originally designed to run under Linux, although it should work under most other unices as well.
Some of the many features of Nagios include:

- Monitoring of network services (SMTP, POP3, HTTP, NNTP, PING, etc.)
- Monitoring of host resources (processor load, disk usage, etc.)
- Simple plugin design that allows users to easily develop their own service checks
- Parallelized service checks
- Ability to define network host hierarchy using "parent" hosts, allowing detection of and distinction between hosts that are down and those that are unreachable
- Contact notifications when service or host problems occur and get resolved (via email, pager, or user-defined method)
- Ability to define event handlers to be run during service or host events for proactive problem resolution
- Automatic log file rotation
- Support for implementing redundant monitoring hosts
- Optional web interface for viewing current network status, notification and problem history, log file, etc.

It's licensed under the terms of the GNU General Public License Version 2 as published by the Free Software Foundation. This gives you legal permission to copy, distribute and/or modify Nagios under certain conditions.
Read the 'LICENSE' file in the Nagios distribution HERE
Get Nagios : HERE