crane siding antioch replace siding installing vinyl siding best siding highland park hardie board siding libertyville .. 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:

Editing Your Photos Using Microsoft Picture It Publishing Platinum 2002 - A Great Dinosaur

I started using PIP (Picture It Publishing) Platinum 2002 right... Read More

Databases ? How We Love to Hate Them!

You've finally created databases that you can actually use to... Read More

International Support - Microsoft Great Plains VAR/Partner Selection ? Overview for V.P. IT

Looks like Microsoft Great Plains becomes more and more popular,... Read More

Put Some Pizazz in Your Software Arsenal

The software giants don't do everything and don't always produce... Read More

C++ Tutorial 1, Introduction to C++

Introduction to C++Why Learn C++?C++ may at first seem like... Read More

Recovering Microsoft Great Plains Customization ? Tips for IT Director

Remember nice and prosperous Clinton era? When you implemented innovative... Read More

Navision Attain Database access via C/ODBC in ASP.NET Application

Navision Software was purchased by Microsoft and now it is... Read More

Popular Fleet Maintenance Programs

Some companies that are in need of fleet management may... Read More

10 Ways to Learn a Software

Following tips help you to learn a software in lesser... Read More

Builders Beware

Which Type of Shop Can Rely On A Home Built... Read More

Removing Incoming Email in MS Exchange, C# Example

The purpose of one of our projects was MS Exchange... Read More

Microsoft Great Plains BR: Bank Reconciliation

Microsoft Business Solutions Great Plains is marketed for mid-size companies... Read More

Marketing Your WinRunner Team

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

Free Software for Newbies and Web Developers

Here is some free software tools to help you build... Read More

Microsoft Great Plains Implementation in Russia ? Overview for Consultant

Microsoft Business Solutions Great Plains is very popular ERP platform... Read More

Beware of The Pirated Software E-Mail Scams!

You have gotten those E_Mails buy software at deep discounts.... Read More

Configure Windows Indexing Service for Performance

The Windows Indexing Service provides you with the ability to... Read More

These Items Are A Must Before Making The Decision To Purchase Any Off-The-Shelf Software

1. What determines the software price? Is it Per Seat... Read More

PHP On-The-Fly!

IntroductionPHP can be used for a lot of different things,... Read More

Microsoft Office Selecting Secrets

Stop the Runaway MouseWhat's the "runaway mouse?" You've seen it...you... Read More

Data Quality Best Practices for Salesforce.com

Executive SummaryAn effective plan for entering, cleaning and updating the... Read More

Great Plains Dynamics/eEnterprise Upgrade ? Things to Consider and FAQ

If you have Great Plains Dynamics/eEnterprise (version 6.0 or earlier)... Read More

C++ Tutorials: 3, Program Flow (If, Else, While, For)

Program Flow is what you think it is. How the... Read More

Corporate ERP: Standard vs. Rich functionality ? Microsoft Great Plains

Traditionally we were considering functionally rich systems, such as SAP,... Read More

Microsoft Great Plains & CRM in Transportation & Logistics ? Overview

Microsoft Business Solutions Great Plains and MS CRM (client relation... Read More

led vs induction lighting street light installation Pete's produce ..
led vs induction lighting street light installation Pete's produce ..