VideosAsyncOS 12.0 Suggest EditsHow-Tos External Threat Feeds (ETF) Sender Domain Reputation (SDR) DNS-based Authentication of Named Entities (DANE) Smart Licensing Cisco Threat Response (CTR) Updated 12 months ago Table of Contents How-Tos External Threat Feeds (ETF) Sender Domain Reputation (SDR) DNS-based Authentication of Named Entities (DANE) Smart Licensing Cisco Threat Response (CTR)