under the toolbar is a representation of the front panel of the firebox, shown on the following figure, including the security triangle display, traffic volume indicator, processor load indicator, and basic status information.

    the lights on the display represent those found on the front panel of the firebox. the triangle shows the predominant flows of traffic among the trusted, external, and optional interfaces. a red corner of the triangle illuminates when that interface is blocking packets. the two bar graphs indicate traffic volume and the proportion of firebox capacity being used.

    for more information on the front panel, see the following faq:

    https://support.watchguard.com/advancedfaqs/fbhw_lights.asp