Huawei ZTE MU500 User Manual page 17

 Example software update notification:
SETTINGS > FIREWALL > PORT FILTERING
 Select Enable to turn on the Port Filtering settings
 You can apply filters based on MAC Address, Source IP Address, Destination IP Address and select the
action to drop or accept the packets.
 Firewall settings are for advanced users and network administrators.
 Press the Help icon
to get in context tips
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