Tenda 3G186R User Manual page 31

Mobile Wireless Modem
MAC Filter: Select Enable/disable from the drop-down list next to "MAC
Filter".
Enable: Enable/disable the selected rule.
Filter Mode: Click the "DENY access to Internet ONLY" radio button to
prohibit hosts at specified MAC addresses from accessing only Internet
through the device. Click the "ALLOW access to Internet ONLY" radio
button to permit hosts at specified MAC addresses to access only
Internet through the device. Each filter rule takes effect on the set MAC
addresses only.
MAC Filter List: Displays up to 10 filter entries.
7.3.3 IP/Port Filter
To better manage the computers in LAN, you can use the MAC Address
Filter mentioned above or IP/Port Filter function to control LAN
computer's access to certain resources on Internet.
31