Sonos Multi-Room Music System - Manual (Page 149)

Sonos Multi-Room Music System User Guide 5-12
If you cannot access your music and Sonos Desktop Controller software after setting
the Protection Level to Cautious or Trusting, please follow the instructions below:
1. Select the Intruders or Events tab.
2. Identify the ZonePlayer’s IP address.
3. Right-click and select Trust Intruder>Trust and Accept.
This setting will allow the Sonos Multi-Room Music System accessibility with all
firewall security settings; Trusting, Cautious, Nervous, and Paranoid.