Unified Threat Management (UTM)

Content filtering based on file content (SRX Series and vSRX 3.0)—Starting in Junos OS Release 21.4R1, content security (UTM) performs content filtering to determine the file type based on the file content and not on file extensions. The file content is first analyzed to accurately determine the file type.

This feature replaces the legacy content filtering based on MIME type, content type, and protocol commands.

You can define the content filtering rule-set and rules from the [edit security utm utm-policy <utm-policy-name> content-filtering] hierarchy and use these rules from the [edit security utm default-configuration content-filtering] hierarchy for controlling the traffic direction.

The existing show security utm content-filtering statistics command is enhanced to display the content filtering system statistics and errors.

[See Content Filtering, content-filtering (Security UTM Policy), utm, and utm default-configurationshow security utm content-filtering statistics.]