Security Onion and UTC

Sguil uses UTC.  It does this for a few reasons:

1. UTC avoids any timewarps when changing from standard time to daylight saving time and vice versa.
2. UTC allows for correlation when sensors are in different time zones.

Because Sguil uses UTC, it is recommended to set your Security Onion timezone to UTC.  Here's how:

echo "Etc/UTC" | sudo tee /etc/timezone
sudo dpkg-reconfigure --frontend noninteractive tzdata

For more information, please see:

https://help.ubuntu.com/community/UbuntuTime