Snort FAQ

Snort FAQ/Wiki

The official Snort FAQ/Wiki is hosted here, and on Github.

To recommend changes to any of the FAQ documents, feel free to fork the snort-faq repository and submit a pull request.

Snort FAQ

What can I do with Snort?
Where can I download Snort?
Does Cisco sell Snort?
What is a Snort Integrator?
I'm not receiving alerts in Snort
I'm receiving an error regarding IP Datagram length, what is the problem?
My Snort log is an empty file, what could be the cause?
Can I have help with my homework?
Abuse of Snort.org
What is Snort?
What is Open Source?
What is the relationship between Snort and Cisco?
What is the role of Talos?
I'm a Cisco Partner Purchasing a Subscription For a Customer
Where is my PO license?

Mailing Lists

What is the mailing list etiquette?
How do I submit questions about Snort?
How do I ask a good question on the Snort list?

Snort.org

What is a registered user?
Why do I need to register?
What if I do not wish to register?
Will my information be shared with any other parties or used for marketing?
How can I provide feedback or suggestions for the site?

Rules

What is a Snort rule?
What is a signature?
What is a vulnerability?
What is an exploit?
What is a protocol?
What are Community Rules?
What are Snort Subscriber Rule Set?
What is a user-defined rule?
Why are rules commented out by default?
How are rules distributed?
Resolving Flowbit Dependancies
What are the differences in the rule sets?
Shared Object Rules

Snort Subscriber Rule Set Subscription

What does having a Snort Subscriber Rule Set subscription entitle me to?
Do I have to subscribe to receive the Snort Subscriber Rule Set?
How much does a subscription cost?
If I purchase a subscription, can I deploy the rules on more than one sensor?
Can I use tools such as PulledPork to manage the subscription?
Where do I go to subscribe to the Snort Subscriber Rule Set?
Can I receive an invoice for my Snort.org purchase?
Ways to purchase a Snort Subscription
Where do I read about the refund policy?

Licensing

What is the GNU GPL?
What is the Snort Subscriber Rule Set License Agreement?
What is the Snort Integrator License?
How is the Snort software licensed?
Why are the rules licensed separately from the software?
What license is used if I contribute code for the Snort Engine?
What license is used if I contribute a rule for Snort?