How to find this setting:
Protection Settings > Internet & Email Controls
Available only in select versions of Trend Micro security software.
To help keep yourself safe on the
Internet at home or on the go, you should mark both of these
the Activate the Firewall Booster to enhance the
protection given by the Windows Firewall checkbox to
configure the Windows Firewall so that it can offer better
protection against online threats.
the Display a warning when connected to potentially
unsafe wireless networks or hotspots checkbox to see
a warning if you connect to a wireless network without trustworthy
Only password-protected wireless networks are considered safe. Wireless networks that redirect your connection without encryption are considered risky. Wireless networks that do not have an authentication process or a valid security certificate rank as dangerous.