Explore software-defined segmentation in this 28-minute conference talk from GrrCON 2017. Delve into how TrustSec simplifies security management and addresses new business demands that create security and administrative challenges. Learn about the limitations of traditional segmentation methods using ACLs and VLANs, and discover how to enable software-defined segmentation with TrustSec for various common deployment scenarios. Cover topics such as user-to-data center access control, campus and branch segmentation, and data center segmentation. Examine the process of transitioning to software-defined segmentation, understand Cisco TrustSec's tag-based policy approach, and explore Rapid Threat Containment (RTC) using Firesight Management Center (FMC) and ISE. Gain insights into open technology solutions for modern network security challenges.