<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Nov 29, 2017 at 5:59 PM, Leonard <span dir="ltr"><<a href="mailto:ljacobs@netsecuris.com" target="_blank">ljacobs@netsecuris.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div></div><div>So if Suricata 4.0.1 is installed and running, is it better to use the 2.x set or the 4.x set?</div><span class=""><div><br></div></span></div></blockquote><div><br></div><div>4.x</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><span class=""><div>On Nov 29, 2017, at 5:21 PM, Francis Trudeau <<a href="mailto:ftrudeau@emergingthreats.net" target="_blank">ftrudeau@emergingthreats.net</a>> wrote:<br><br></div></span><blockquote type="cite"><div><span class=""><div dir="ltr">No more 1.x. It will throw errors if you try to use the 2.x set.<div><br></div><div>Each set covers versions above it. 2.x set will run in anything above 2.0. If running 4.0, that set will work, but you'll be missing out on the new features we're targeting.</div><div><br></div><div>-FT</div><div><br></div><div><br></div><div><br></div><div><br></div></div></span><div class="gmail_extra"><br><div class="gmail_quote"><span class="">On Wed, Nov 29, 2017 at 11:11 AM, Charles Devoe <span dir="ltr"><<a href="mailto:Charles.Devoe@cisecurity.org" target="_blank">Charles.Devoe@cisecurity.org</a>></span> wrote:<br></span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial",sans-serif">So if I understand this correctly. There are Emerging Threats rules for 1.X, 2.X, and 4.X. Are there no 3.X rulesets?
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<p class="MsoNormal"><b>Charles DeVoe Jr.</b><u></u><u></u></p>
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</span><p class="MsoNormal"> <a href="https://www.facebook.com/CenterforIntSec" target="_blank"><span style="color:windowtext;text-decoration:none"><image002.png></span></a> <a href="https://twitter.com/CISecurity" target="_blank"><span style="color:windowtext;text-decoration:none"><img border="0" width="32" height="33" style="width:.3333in;height:.3437in" id="m_-3425788003415063060m_6071537731131842831Picture_x0020_3" src="cid:image003.png@01D36913.80368C70" alt="id:image003.png@01D2926D.D9CF2E90"></span></a> <a href="https://www.youtube.com/user/TheCISecurity" target="_blank"><span style="color:windowtext;text-decoration:none"><<wbr>image004.png></span></a> <a href="https://www.linkedin.com/company/the-center-for-internet-security" target="_blank"><span style="color:windowtext;text-decoration:none"><img border="0" width="32" height="33" style="width:.3333in;height:.3437in" id="m_-3425788003415063060m_6071537731131842831Picture_x0020_5" src="cid:image005.png@01D36913.80368C70" alt="id:image005.png@01D2926D.D9CF2E90"></span></a><u></u><u></u></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Oisf-users [mailto:<a href="mailto:oisf-users-bounces@lists.openinfosecfoundation.org" target="_blank">oisf-users-bounces@lis<wbr>ts.openinfosecfoundation.org</a>]
<b>On Behalf Of </b>Jason Williams<br>
<b>Sent:</b> Wednesday, November 29, 2017 12:07 PM<br>
<b>To:</b> Alan Amesbury <<a href="mailto:amesbury@oitsec.umn.edu" target="_blank">amesbury@oitsec.umn.edu</a>><br>
<b>Cc:</b> <a href="mailto:oisf-users@openinfosecfoundation.org" target="_blank">oisf-users@openinfosecfoundati<wbr>on.org</a><br>
<b>Subject:</b> Re: [Oisf-users] Suricata 4.0 rule fork<u></u><u></u></span></p>
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<p class="MsoNormal">On Tue, Nov 28, 2017 at 10:29 AM, Alan Amesbury <<a href="mailto:amesbury@oitsec.umn.edu" target="_blank">amesbury@oitsec.umn.edu</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">This message made its way to me via a coworker; my "digest" version apparently isn't due out for another half hour or so, so apologies for any misquoting.<br>
<br>
Francis Trudeau wrote:<br>
<br>
> The new Suricata 4.0 rules have been live on the production servers<br>
> since Thanksgiving. Sorry for the notification delay, we wanted to<br>
> see what happened over the US holiday weekend, and everything looks<br>
> good.<br>
><br>
> Please use the version number of your engine in the URL you use to<br>
> retrieve the set. We changed how it works now, and some paths that<br>
> worked before will no longer work. This was done to ensure people got<br>
> the right set for their engine. Please check your sensors and make<br>
> sure everything is updating correctly.<br>
<br>
Are rulesets backwards compatible? For example, can I run a ruleset intended for a v2.x version of Suricata on a 4.x version? I have a pair of sensors that for ${REASON} haven't been able to upgrade. The bulk are on a v3.x version, but I have some running
2.x.<u></u><u></u></p>
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<p class="MsoNormal">As suricata has kept compatibility with old versions, and we still have a Suricata 2.0 ruleset, at this time you can run an ET ruleset intended for a v2.x version of Suricata on a 4.x version.<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Also, is there a definitive list of the ruleset version differences somewhere, e.g., which features require which engine version? I looked at<br>
<br>
<a href="http://suricata.readthedocs.io/en/latest/rules/index.html" target="_blank">
http://suricata.readthedocs.io<wbr>/en/latest/rules/index.html</a><br>
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<p class="MsoNormal">Other than patch notes (<a href="https://suricata-ids.org/2017/07/27/suricata-4-0-released/" target="_blank">https://suricata-ids.org/2017<wbr>/07/27/suricata-4-0-released/</a>) not to my knowledge. Many rule related improvements, such as http/tls
buffers were introduced in 4 that we (ET) couldn't pass up, hence the fork. Tons of under the hood stuff that makes 4.0 much better. <u></u><u></u></p>
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<p class="MsoNormal">but didn't see any v3.x vs v4.x differences highlighted. In contrast, I see notes specific to v1.x and v2.x in section 4.5.2.1.1.1 "Appendix A - Buffers, list_id values, and Registration Order for Suricata 1.3.4" (although the table in
4.5.2.1.1.2 is unreadable due to truncation).<br>
<span style="color:#888888"><br>
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<span class="m_-3425788003415063060m_6071537731131842831gmail-hoenzb">--</span><br>
<span class="m_-3425788003415063060m_6071537731131842831gmail-hoenzb">Alan Amesbury</span><br>
<span class="m_-3425788003415063060m_6071537731131842831gmail-hoenzb">University Information Security</span><br>
<span class="m_-3425788003415063060m_6071537731131842831gmail-hoenzb"><a href="http://umn.edu/lookup/amesbury" target="_blank">http://umn.edu/lookup/amesbury</a></span><br>
<br>
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</blockquote>
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