Greg Steen.  What is Snort?  Snort purposes  Where can it be used?

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Presentation transcript:

Greg Steen

 What is Snort?  Snort purposes  Where can it be used?

 IDS/IPS  Sniffs & Logs packets based on rule set  When inline, can drop packets, thus IPS  Sniffer  Command-line packet sniffer  Packet Logger  Logs packets without a rule base.

 Architecture  Where will Snort reside on a network?  Installation  Components  Snort- IDS/IPS  Barnyard- Processes output of Snort  Base- GUI to see the captured packets  MySQL- Stores packet information and run DML functions

 Configuration files  Rules.conf  Snort.conf  Barnyard2.conf  Permission settings  Database  GUI

 Rule writing  Sample rules  #pass tcp any <> any (msg:"allowed traffic for ubuntu updates";sid: ;)  alert icmp ! /16 any -> /16 any (msg: "Intrusion traffic";sid: ;)  #drop tcp any 80 <> any 80 (msg:"Drop tcp all port 80";sid: ;)  Base lining the network  Important to monitor and establish what is acceptable traffic.

 Data  What is collected.  Interpretation  Analysis  Uses for data

 Summary  Snort is an open-source IDS/IPS  Designed to be available at no cost for those that want it  Many businesses can use Snort, small to large and it depends on the amount of maintenance desired to handle.