Waveshare WS-431E User Manual page 41

WS-431E
4G Router
Figure 45 Firewall IP blacklist 1
In the jumped page, select "lan" as the source zone, and select "any" as the source MAC
addresses and source IP address options (if only the specific IP in the local area network is
restricted from accessing the specific IP of the external network, you need to fill in the IP address
or MAC address here, one of which is "any" or the IP address corresponds to the MAC address,
otherwise it will not take effect), as shown in the following figure.
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