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To refine firewall protection, you can create a list of FQDNs to block. Firewall blocks connections to the IP addresses resolving to the domain names.
Before you begin
Make sure that the interface mode for the Trellix Endpoint Security (ENS) Client is set to Full access or log on to the Trellix Endpoint Security (ENS) Client as administrator.
Task
Open the Trellix Endpoint Security (ENS) Client.
Click Firewallon the main Status page.
Or, from the Action menu , select Settings, then click Firewallon the Settings page.
Under DNS Blocking, click Add.
Enter the FQDN of the domains to block, then click Save.
You can use the * and ? wildcards. For example, *domain.com.
Endpoint Security (ENS) > Trellix Endpoint Security (ENS) 26.x Product Guide - Windows > Managing on a client system > Managing Firewall on a client system