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Preface The purpose of this post is to provide guidance to Snort users who would like to try out Snort 2.9.7.0 and the OpenAppID features that it comes with. It is not intended to guide the reader through setting up Snort from scratch, there are plenty of docs on how to set up Snort at  http://www.snort.org/docs. Snort Before we can download the latest Snort source code and compile it, we have a new prerequisite to fulfill before we can compile Snort. You'll need to install  Luajit , which is used to define application detectors with the new OpenAppID. Step #1, Prep the system. You’ll need to download the following files from  snort.org download page : *   daq-xxx.tar.gz *   snort-2.9.7.0_xxx.tar.gz *   snort-openappid-detectors.xxx.tgz *   snortrules-snapshot-xxx.tar.gz Step #2, Install Snort requirements On my Ubuntu system this was as easy as the following command. #   sudo apt-get install openssl libssl-dev build-essential g++ flex bison ...

In this guide will be explained how to work with Suricata in layer3 inline mode and how to set iptables for that purpose. First start with compiling Suricata with NFQ support. For instructions see  Ubuntu Installation . For more information about NFQ and iptables, see  suricata.yaml . To check if you have NFQ enabled in your Suricata, enter the following command: suricata --build-info and examine if you have NFQ between the features. To run suricata with the NFQ mode, you have to make use of the -q option. This option tells Suricata which of the queue numbers it should use. sudo suricata -c /etc/suricata/suricata.yaml -q 0 Iptables configuration First of all it is important to know which traffic you would like to send to Suricata. Traffic that passes your computer or traffic that is generated by your computer. If Suricata is running on a gateway and is meant to protect the computers behind that gateway you are dealing with the first scenario:  forward_i...

Step #1, Prep the system. You’ll need to download the following files from snort.org daq-2.0.2.tar.gz snort-2.9.7.0_alpha.tar.gz snort-openappid-detectors.2014-02-22.187-0.tgz snortrules-snapshot-2960.tar.gz You’ll find the first three files in the downloads section  https://www.snort.org/downloads , and the last file in the rules section  http://www.snort.org/snort-rules/ . The exact rules files available will change over time, just make sure you get one that is compatible with Snort 2.9.x release. Start with a clean installation of Ubuntu 13.10 Server. The only task selected for the system to be used at during installation was an SSH Server. The files were downloaded into a directory called build. mkdir ~/build cd ~/build Step #2, Install Snort requirements The following packages were added to the system via apt. apt-get install openssl libssl-dev build-essential g++ flex bison zlib1g-dev autoconf libtool libpcap-dev libpcre3-dev libdumbnet-dev build-essential Libdnet-1...

Welcome to SmoothSec! The SmoothSec team is glad you've stopped by and are excited to get started with Network Security Monitoring using the best tools available today. SmoothSec bundles all of these tools together and creates a simple platform for you to deploy highly customizable NSM solution within minutes. From the complete beginner to the seasoned veteran, SmoothSec's goal it to make NSM more effective and approachable. We sincerely hope you enjoy the guides available on this wiki, and we look forward to any feedback or suggestions you may have regarding improving this documentation. Understanding NSM New to Network Security Monitoring or "NSM"? This section is for you! Why do we have this section before the installation guide? Having a high level understanding of NSM and how it works within the context of SmoothSec will help you select the best installation method for your purposes, and introduce you to the family of brilliant application...

Continuing with the posts about Snort Snort from scratch (part II) , now we have a complete installation and web interface to monitor our network alerts. One of the most important things when you maintain an IDS like Snort in a network, is the include of new rules to alert of possible attacks, behaviors of Malware or simply the needed of control a part of our traffic for some reasons. The rules of Snort are very flexible and has a lot of possibilities of configuration, logically in this post I’ll do a short introduction to write basic rules explaining the components of a rule and some options that can be useful. Anatomy of a rule A Snort rule, basically is composed by the header (information about the traffic) and the options (contains some action to do on the packet). Headers is composed by: Action Protocol Source IP Source Port Direction Operator Destination IP Destination Port (Options) Action : Refers what snort will do when a packet match with the rule. Poss...