Network Traffic Analysis (Legacy) - Alert Types
Selecting Traffic from the Legacy Kill Chain links to the Alerts panel with for Legacy Alert Types set to Legacy Network Traffic. This gives you a way to view alert types through the lens of the legacy kill chain. The mechanics of working with the page are exactly the same as the Alert Types page described here.
You can always see which display filters are applied to the Alerts page by examining the checked boxes in the Filters panel at the left of the display.