# Getting started with add-on features

In the Add-Ons pane in the Engine Editor, you can enable several optional add-ons for engines, such as TLS inspection, QUIC inspection, browser-based user authentication, anti-malware, file reputation checks, and ZTNA connector.

Some add-ons are separately licensed features.

Table 1. Supported roles for add-on features
Add-on | Supported on
--- | ---
TLS Inspection | Engines, IPS engines, Layer 2 Engines, Virtual Engines, Virtual IPS engines, Virtual Layer 2 Engines
ECA Settings | Engines, IPS engines, Layer 2 Engines, Virtual Engines
User Authentication | Engines, Virtual Engines
User Identification | Engines, IPS engines, Layer 2 Engines
Anti-Malware | Engines, IPS engines, Layer 2 Engines, Master Engines
File Reputation | Engines, IPS engines, Layer 2 Engines, Master Engines
IPv6 Transition | Single Engines, Engine Clusters, Virtual Engines
Sidewinder Proxy | Engines
Snort | Engines, IPS engines, Layer 2 Engines
ThreatSeeker | Engines, IPS engines, Layer 2 Engines, Virtual Engines, Virtual IPS engines, Virtual Layer 2 Engines
OPC UA Inspection | Engines, IPS engines, Layer 2 Engines