[Snort-users] [Snort-sigs] Snort EOL Reminder

Joel Esler jesler at ...1935...
Thu Dec 1 17:24:02 EST 2011

I'd prefer to keep the discussion on the list it started on.  Thanks for the offer.

I've contemplated responding to this thread.  However, I feel that any way that I respond to point out the merits and differences in between the rulesets will just be seen as a flame war.  We've done this before, and I am not about to do it again.

I've contributed to both rulesets, I know how they both work, and I'm probably the only person that does.

I will correct an incorrect statement with my own statement that we haven't released any closed GID 3 rules since May of 2011.  All of our rules have been open since then.  In fact, we've went back through and opened up the vast majority of the GID rules that we were allowed to do so to.

Anything else I say I think will be misconstrued as "someone from the VRT pouncing on ET", even though I'm both a member of the VRT and the OpenSource Community Manager.  

If the facts are wanted, I'd be glad to discuss, but I am concerned about the above.


On Dec 1, 2011, at 4:56 PM, Matthew Jonkman wrote:

> Thanks for the good words. Both rulesets are quite good, just different focus for each, and different platforms supported. 
> I think it'll cause much more heartburn if I were to explain my percetion of the differences in the rulesets on the sourcefire lists here, so if no one minds I'll take that over to the emerigng-sigs list and we can talk about it more there. 
> Matt
> On Dec 1, 2011, at 4:50 PM, L0rd Ch0de1m0rt wrote:
>> Shawn, this is a good question.
>> Simply put, the VRT ruleset is geared more toward exploits and ET is
>> geared more toward malware and, obviously, emerging threats.  That
>> said, there is a lot of overlap.  My understanding is that a lot of
>> effort went in to the ET ruleset (open and pro) before the ET Pro
>> launch and some of that was adding rules so the ET ruleset covered a
>> lot of what VRT covered as well. I could be wrong about that (I'm not
>> officially affiliated with VRT or Emerging Threats by the way).
>> The ET Pro ruleset does have coverage for stuff like the monthly
>> Microsoft vulnerabilities and more.  I believe they have access to the
>> MS patch pre-release data MS gives to security companies (this is one
>> reason why ET Pro requires a NDA I believe).  This, along with the
>> support, active development, and QA is why ET Pro is not free.
>> Speaking of NDA, there is one of those but the rules are still all
>> text based which is nice because you can get a better idea of why a
>> rule fired, unlike some VRT GID3 rules that are closed source.  I
>> guess ET just expects you to abide by the NDA and they only do
>> business with legit companies.
>> Personally, I stopped updating the VRT rules a while back.  The rules
>> were not very efficient or timely enough for me.  I still run a few
>> older ones I find useful from time to time.
>> This is just my 2 cents; Matt could probably give you a more detailed
>> and better answer; I'll include him on this response.  You may also
>> wish to ask the emerging-sigs mailing list
>> (http://lists.emergingthreats.net/mailman/listinfo/emerging-sigs) for
>> people's opinions.
>> Cheers,
>> -L0rd Ch0de1m0rt
>> On 12/1/11, Jefferson, Shawn <Shawn.Jefferson at ...14448...> wrote:
>>> I've been curious what the differences between the ET paid rules and the VRT
>>> subscription rules are? I'm hoping this can be discussed without opening a
>>> huge flame war. :)  For background, I'm currently running the VRT
>>> subscription rules with the ET free rules.
>>> For instance, the VRT is part of the MS program that releases vuln data
>>> early (and typically these rules are .so rules).  Does ET get this data?
>>> How do they deal with non-disclosure, since I think all the rules are text
>>> based?
>>> For the most part, is everything in the VRT ruleset covered in the ET
>>> ruleset?  Could I drop VRT for instance and just run ET pro?
>>> -----Original Message-----
>>> From: L0rd Ch0de1m0rt [mailto:l0rdch0de1m0rt at ...11827...]
>>> Sent: Thursday, December 01, 2011 1:06 PM
>>> To: Joel Esler
>>> Cc: snort-sigs at lists.sourceforge.net; snortusers at ...14071...;
>>> snort-users at lists.sourceforge.net Users; Snort-Signatures
>>> Subject: Re: [Snort-users] [Snort-sigs] Snort EOL Reminder
>>> Thanks for the reminder, Joel.  Those who can't upgrade to a newer or newest
>>> version of Snort, or wish to use a different ruleset alongside, or instead
>>> of the VRT set, should definitely check out Emerging Threats Pro --
>>> http://www.emergingthreatspro.com/.  The Emerging Threats Open rules are
>>> free and updated almost daily to respond to the latest threats and I have
>>> found them to be quite effective, timely, and properly QAed.  There are also
>>> some you can pay for as well (cheaper than VRT I think); see
>>> http://www.emergingthreatspro.com/products/ for details.
>>> Emerging Threats Open/Pro supports rules for Snort 2.4.0 up to the current
>>> version, as well as rules optimised for Suricata
>>> (http://www.openinfosecfoundation.org/index.php/download-suricata).
>>> Personally, I like https://rules.emergingthreatspro.com/open-nogpl/.
>>> That said, if you are still running an older version of Snort, I highly
>>> encourage you to update since there are a lot of new and extremely helpful
>>> features in newer versions that allow for more accurate and efficient rules.
>>> Cheers,
>>> -L0rd Ch0de1m0rt
>>> On 11/28/11, Joel Esler <jesler at ...1935...> wrote:
>>>> As a reminder, today's rule release marks the last rule release for
>>>> Snort
>>>> http://blog.snort.org/2011/11/vrt-rule-update-for-11282011.html
>>>> Please upgrade to the current version of Snort ( available at
>>>> http://www.snort.org/snort-downloads
>>>> Our EOL policy and dates of EOL for Snort versions can be found here:
>>>> http://www.snort.org/vrt/rules/eol_policy
>>>> Thanks!
>>>> --
>>>> Joel Esler
>>>> Senior Research Engineer, VRT
>>>> OpenSource Community Manager
>>>> Sourcefire
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> ----------------------------------------------------
> Matt Jonkman
> Emerging Threats Pro
> Open Information Security Foundation (OISF)
> Phone 866-504-2523 x110
> http://www.emergingthreatspro.com
> http://www.openinfosecfoundation.org
> ----------------------------------------------------

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