Snort 3 installation guide update for Ubuntu 18 & 19

By Noah Dietrich.

Today, we released Noah's installation guide for the newest version of Snort 3 for Ubuntu 18 and 19. We've provided some highlights below, but you can view the full log of changes, along with a guide of setting up Snort 3 on Ubuntu, here.

Major changes in this release:

• Tested with Snort 3.0.1 b2
• Ubuntu 20 LTS support added
• Ubuntu 19 support removed
• Removed old environmental variables
• Added new IP commands to replace ipconfig on Ubuntu 20 

Minor Changes:

• SafeC updated to 3.5.1
• Gperftools updated from 2.7.0 to 2.7.90
• Boost headers updated from 1.71.0 to 1.72.0
• Hyperscan updated from 5.2.0 to 5.2.1
• Flatbuffers updated from 1.11 to 1.12
• Updated openAppId to 12159
• Replaced community rules with registered rules
• Updated from Splunk 7.x to Splunk 8.x
• Configure Splunk startup to use systemD rather than init.
• Added libcmocka-dev libraries to support DAQ requirements.

Shared Object Rule OS build change is coming

In an upcoming release,  (we are targeting March 8th), we will be removing Ubuntu 10 and Ubuntu 12 from our Shared Object (SO) precompiled rule build system.

We have already added SO builds for Ubuntu 14, 16, and 17, in both 32bit and x64 to replace the older EOL'ed versions of Ubuntu.

Please provide us feedback here, or on the Snort-Sigs mailing list!  Thank you!