# 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, browser-based user authentication, anti-malware, and file reputation checks.

Some add-ons are separately licensed features.

Table 1. Supported roles for add-on features
Add-on | Supported on
--- | ---
TLS Inspection | Firewalls, IPS engines, Layer 2 Firewalls, Virtual Firewalls, Virtual IPS engines, Virtual Layer 2 Firewalls
ECA Settings | Firewalls, IPS engines, Layer 2 Firewalls, Virtual Firewalls
User Authentication | Firewalls, Virtual Firewalls
User Identification | Firewalls, IPS engines, Layer 2 Firewalls
Anti-Malware | Firewalls, IPS engines, Layer 2 Firewalls, Master NGFW Engines
File Reputation | Firewalls, IPS engines, Layer 2 Firewalls, Master NGFW Engines
IPv6 Transition | Single Firewalls, Firewall Clusters, Virtual Firewalls
Anti-Spam | The Anti-Spam feature is no longer supported in NGFW version 6.2.0 and higher.
Sidewinder Proxy | Firewalls
Snort | Firewalls, IPS engines, Layer 2 Firewalls
ThreatSeeker | Firewalls, IPS engines, Layer 2 Firewalls, Virtual Firewalls, Virtual IPS engines, Virtual Layer 2 Firewalls
OPC UA Inspection | Firewalls, IPS engines, Layer 2 Firewalls