best siding mundelein crane siding vinyl siding cost mchenry county hardie siding james hardie siding deerfield .. Chicago Drug testing

Snort for Network IDS

What is Snort?

Snort is an open source network intrusion detection system (NIDS) that can audit network traffic in real-time. Snort is a packet sniffer, a packet logger, and a network intrusion detection system.

Snort as I mentioned before is an open source software which means it can be configured and complied on most operating systems. Snort has been ported over to Microsoft Windows operating systems also, but it's bread and butter is back on the UNIX/Linux side of the house. Most Linux distributions now include Snort as part of their install package, and though it may not be enabled by default, normally it is on the installation CD's or DVD's.

Should I run Snort if I have a firewall?

I believe that yes you should run a NDIS even with a firewall. Firewalls help to block packets coming in to your system, however if you are running different servers or services that require the firewall to let them through you are letting a large amount of data go un-audited. Snort has the ability to see trends in incoming data and identify them as a threat and take appropriate action on your system. Snort gives you the ability to see if you are being port scanned, or to see if someone is trying to abuse well known backdoors or problems in well known daemons. Running services and applications that help you to protect your system is always a good idea. Many system administrators run a firewall, snort, and a data file integrity checker (often Tripwire).

How does snort actually work?

Snort generally is running as a background application and it is constantly packet sniffing all the information passing through your network interface card (NIC). The data is then sorted by various preprocessors that basically sort the packet data in to different categories. Once the data has been sorted out it is run through the rules, or the detection phase. As Snort detects trends in the data it applies the rules and actions them appropriately. The final stages are logging the rule infractions and if configured alerting the system administration team in real-time as the infraction occurs.

Is Snort difficult to configure and use?

Snort, as mentioned before now often comes bundled or available through rpm's in most Linux distributions. The hard part of running snort is if you decide to create your own original rules which can get extremely complex. However, luckily for us you can download up to date rule sets for free off the Snort website (you must signup for the free registration).

For extra ease of use there are many different applications and log parsers which have been designed to work with Snort. These applications can create websites based on the data Snort has logged or help you identify trends or possibly security threats on your system.

Ken Dennis
http://KenDennis-RSS.homeip.net/

In The News:

Microsoft Great Plains Installation ? Overview for IT Director/Controller

Microsoft Great Plains is main mid-market application from Microsoft Business... Read More

SSH (SCP) Send Files from Windows to Your Linux Box

Not all of us have the luxury of working both... Read More

An Easy Way to Develop JAVA Enterprise Applications

Research bears that less than 70 percent of development projects... Read More

Did You Ever Want to Completely Erase Everything on Your Computer?

Did you ever want to erase everything on your computer?... Read More

Navision Sales Module & Reporting: Jet Reports, C/ODBC, XBRL, Business Analytics ? highlights

Microsoft bought Navision, Denmark based software development company, along with... Read More

Accessing XML Using Java Technologies

The most important benefit of XML is its simplicity. Though... Read More

An Easy Way to Deal with Email Viruses and Worms

If you feel intimidated when someone tries to teach you... Read More

Windows Screensavers Explained

In this article you will find some background information about... Read More

Crystal Reports for Microsoft Great Plains

Microsoft Business Solutions ? Great Plains is designed to meet... Read More

Microsoft CRM Integration & Customization: SharePoint Document Gateway

MS CRM is very close to document workflow automation, including... Read More

Secure File Transfer Using SSH Plus Additional Audit & Automation - FSA Reporting

In order to meet regulatory and corporate compliance requirements reporting... Read More

Microsoft CRM for Corporate Business ? Working Offline

If your company has regional and worldwide operations, you might... Read More

Linux Secrets

The first thing that you will notice about Linux Red... Read More

Marketing Your WinRunner Team

It won't matter how effective your WinRunner Team is if... Read More

Do You Know These Facts About Spyware ?

Imagine something that follows you home and sets itself up... Read More

Microsoft Great Plains customization ? Freight Forwarding/Transportation industry example

Microsoft Business Solutions Great Plains version 8.5, 8.0, 7.5, Great... Read More

The Tools and Features of Adobe Photoshop

Adobe Photoshop is one of the world's leading graphics editing... Read More

Microsoft Great Plains Implementation: Collection Management ? Overview For Consultant

Microsoft Business Solutions Great Plains is very good fit for... Read More

You Can Write Microsoft Office Program in About 60 Minutes

Microsoft Office program is a programming tool called Visual Basic... Read More

A Simple Guide To Wikis

A wiki is an editable text-based website. But you don't... Read More

History of Java

The java programming language is becoming more and more popular... Read More

Microsoft CRM Data Conversion FAQ

Microsoft Business Solutions CRM data conversion deserves FAQ type of... Read More

Implementing ERP for Large Publicly Traded Corporation ? Microsoft Great Plains

We would like first emphasize the change in the paradigm.... Read More

Causes of ERP Failures

ERP is the acronym of Enterprise Resource Planning. Multi-module ERP... Read More

Screenshots Vista Windows

Features Additionally, Vista will include many other new features.Aero Vista... Read More

induction street light replacement outdoor street lights Pete's produce ..
induction street light replacement outdoor street lights Pete's produce ..