Zhone 6211-I3 User Manual page 61

Firewall
If you want to add a setting to the MAC filtering table, enter the Source and
Destination MAC address, and select protocol type, frame direction, and
WAN interface. Then click on Save/Apply to save it.
Figure 50: IP Filtering - MAC Filtering Add Page
On this screen you can view and delete MAC filtering rules.
Figure 51: IP Filtering - MAC Filtering List
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6211-I3 ADSL2+ Router User's Guide