Running Snort on IIS Web Servers Part 2: Advanced Techniques
Snort, a public domain intrusion detection system, monitors traffic by analyzing every packet on a network, looking for malevolent content. It does this by putting the network adaptor in promiscuous mode so that it can see all network traffic on the wire, a process referred to as packet sniffing. Snort is a rule-based IDS, which means that it applies a set of rules to each packet based on known attack signatures. When it detects an attack signature, it performs the action designated in the rule.
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Current SNORT User Manual
Snort really isn't very hard to use, but there are a lot of command line options to play with, and it's not always obvious which ones go together well. This file aims to make using Snort easier for new users. Before we proceed, there are a few basic concepts you should understand about Snort. There are three main modes in which Snort can be configured: sniffer, packet logger, and network intrusion detection system. Sniffer mode simply reads the packets off of the network and displays them for you in a continuous stream on the console. Packet logger mode logs the packets to the disk. Network intrusion detection mode is the most complex and configurable configuration, allowing Snort to analyze network traffic for matches against a user defined rule set and perform several actions based upon what it sees.
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Running Snort on IIS Web Servers Part 1: Advanced Techniques
It's this simplicity that makes Snort so popular. It is simple and yet it has enough power to protect a good-sized network. It does not try to be everything - it does one job and it does it efficiently. It watches network traffic, looking for rule-based intrusion signatures, alerting and logging when a match is made. There is no GUI, no reporting engine, and no pop-up help file, just a simple command-line utility that sniffs traffic and keeps on sniffing until you tell it to stop. Although there are those who would consider this a weakness, it is exactly what makes it so versatile and so powerful.
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Snort - Lightweight Intrusion Detection for Networks
Snort fills an important "ecological niche" in the the realm of network security: a cross-platform, lightweight network intrusion detection tool that can be deployed to monitor small TCP/IP networks and detect a wide variety of suspicious network traffic as well as outright attacks. It can provide administrators with enough data to make informed decisions on the proper course of action in the face of suspicious activity. Snort can also be deployed rapidly to fill potential holes in a network's security coverage, such as when a new attack emerges and commercial security vendors are slow to release new attack recognition signatures. This paper discusses the background of Snort and its rules-based traffic collection engine, as well as new and different applications where it can be very useful as a part of an integrated network security infrastructure.
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Snort Installation and Basic Usage Part One
Computer Intrusions are on the rise. Whether it's script kids trying to deface a web page or a calculated attacker trying to steal credit card information, sites must equip themselves to not only ward off attacks, but know if these attacks are taking place. This is where Intrusion Detection Systems (IDS) come into play. In a nutshell, an IDS is a system that sits on a network and watches for anomalies. A basic IDS watches either all of the traffic or a sampling of the traffic going through the wire. It compares this traffic to a database of fingerprints or signatures of known attacks. If an attack is detected the IDS can take multiple actions depending on the configurable response to the attack. These actions can be anything from paging the administrator to dropping the route of the attacker. More complex IDS's will also recognize anomalies in the patterns of system users.
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Snort Installation and Basic Usage Part Two
Part I of this article focused on the installation and basic usage of the snort intrusion detection system (IDS) on the Linux platform, including running snort as a command line sniffer and loading snort with a pre-defined rule set. This article will take a look at some further methods and programs that can be used in conjunction with snort to more reliably detect and fend off intrusions. We will also examine how rules are written to suit special case scenarios.
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Complete Snort-based IDS Architecture, Part One
Intrusion detection systems (IDS) are one of the fastest growing technologies within the security space. Unfortunately, many companies find it hard to justify acquiring IDS systems due to their perceived high cost of ownership (for example see Justifying the Expense of IDS by Kevin Timm and David Kinn). However, not all IDS systems are prohibitively expensive. This two-part article will provide a set of detailed directions to build an affordable intrusion detection architecture from hardware and freely available software. This discussion will avoid the classic "build or buy" debate and instead focus on building the system at a minimum cost.
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Complete Snort-based IDS Architecture, Part Two
Many companies find it hard to justify acquiring the IDS systems due to their perceived high cost of ownership. However, not all IDS systems are prohibitively expensive. This is second part of a two-part article that will provide a set of detailed directions to build an affordable intrusion detection architecture from hardware and freely available software. In this installment we shall discuss Web interface configuration, summaries and daily reporting, automated attack response, sensor installation, installation of the central station, and big distributed IDS systems.
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Snort Install Manual
A guide to installing Snort on a Linux machine along with basic configuration and troubleshooting. As the author said, it's a "How in the hell do I get this installed and working" guide.
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Securing an Unpatchable Webserver... HogWash!
During a routine examination of a client's network we discovered a vulnerability on a Microsoft IIS 3 web server. After brief investigation, we discovered that this web server runs a mission-critical web application: it is the client's primary means of doing business and must be protected at all cost. The real problem is that this application is tightly bound to certain features of Microsoft's IIS 3 web server. We searched for a patch, but there were none. Microsoft's solution was to upgrade the server to a more recent version. We attempted to upgrade the server to IIS 4, but the result was disaster. A total rewrite of the web application using better technology is underway, but will not be complete for a long time. In the meantime the server needs to remain available and unhacked. What is the security professional to do?
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Snort for WinXP Installation Non-Enterprise Network
This setup procedure basically follows the instructions on Winsnort.com under Winsnort with Snortsnarf. As we all know all instruction is not complete and always leaves something out and what I have tried here is to clarify and expand on the setup. My goal is to make a simple to follow instruction by outlining each step until the setup is completed. Also, I made some changes in the configuration and added in other components (freesmtp and oinkmaster) to assist the administrator in operating the Winsnort.
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Snort on Window Server 2003
There is a lot documentation on Snort, on Linux, and considerable on Snort for Windows too. But most of the documentation deals with older versions. So I thought, let me create one for the latest version of Snort environment. The setup that I am talking about is running Snort 2.3.3 on Windows Server 2003 with PHP5 and SQL 2000 SP4. All other components are also the latest available for public use.
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