Waveshare WS-431E User Manual page 30

WS-431E
4G Router
Wired WAN port and 4G port accept "inbound", "outbound" and "forwarding";

If there is an "input" packet, logging in to the router's webpage from the WAN port is

allowed;
If there is an "output" packet, the router accessing the external network through WAN port

or 4G port is allowed;
If there is a "forward" packet, a packet from WAN port being forwarded to 4G port is

allowed.
For example: In a certain application scenario, the LAN port needs to access the router's
settings, and the router is also capable of connecting to the internet. However, devices
connected to the LAN port are not allowed to access the internet. In this case, the LAN to WAN
forwarding rule can be set to "deny" or "discard" (discard meaning no feedback information) to
achieve this requirement.In a certain application scenario, the LAN port needs to access the
router's settings, and the router is also capable of connecting to the internet. However, devices
connected to the LAN port are not allowed to access the internet. In this case, the LAN to WAN
forwarding rule can be set to "deny" or "discard" (discard meaning no feedback information) to
achieve this requirement.
www.waveshare.com
Figure 35 Firewall Settings page 2
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