Edit Or Delete Mac Filter Rules; Hidden Mac Filter Rules - NetComm NB4 User Manual

Edit or Delete MAC Filter Rules

To edit an existing MAC Filter Rule, click the radio button adjacent to the Filter Rule name.
The Rule will then appear in the top half of the MAC Filter control screen where it can be
edited. When editing is complete, click 'Add' to return the Rule to the list of existing rules.
To delete MAC Filter Rules, click on the 'Delete' tick box; multiple deletions can be made by
shift-clicking Delete tick boxes; Select All will select every rule. When the desired selections
are made, effect deletion by clicking on Apply.
To save changes, click on Save Settings on the left-hand menu.

Hidden MAC Filter Rules

The MAC filter table contains three hidden rules. These rules are built into the Router to ensure
the user does not become locked out by entering a rule which prevents further access to the
router.
The first rule allows any and all ARP frames through the system.
The second rule allows all IPv4 frames with the destination MAC address of the bridge to go
through.
The third rule allows all IPv4 frames with the source MAC address of the bridge to go through.
TIP: To find the MAC address of a Windows-based computer, at the DOS prompt type:
ipconfig /all.
NB4 User Guide
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