Know the IP address range of Web Reputation Services (WRS) for WFBS-SVC Agents.
If a requested URL cannot be rated by a local database and memory cache search, the Trend Micro URL Filtering Engine (TMUFE) will request a rating from the Trend Micro Rating Server via an HTTP request with an encrypted message.
The Trend Micro Rating Server can be queried by the WFBS-SVC Agent through the following IP address range:
|TrendMicro Data Center IP||18.104.22.168/24|
|Amazon Web Services IP||https://ip-ranges.amazonaws.com/ip-ranges.json|