To improve security, you can stop the Trellix DLP Network Prevent appliance from analyzing unencrypted ICAP traffic.
In ePO - On-prem, open the Policy Catalog.
Select the DLP Appliance Management product, select the Trellix DLP Network Prevent Web Settings category, and open the policy you want to edit.
In Web Settings, deselect Unencrypted ICAP (port 1344).
Click Save.