Waveshare WS-431E - Page 35

WS-431E 4G Router
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input traffic, empty means matching
the destination port.
SNAT IP address
Modify the source address of matching
traffic to this address.
Customized IP when
adding
SNAT port
Modify the source port of matching
traffic to this port, empty means
using the source port.
empty
Figure 40 SNAT setting 4
3. Port forwarding
Port forwarding allows computers or services from the Internet to access computers or
services within a private local area network (LAN). It involves mapping a specified port of the
wide area network (WAN) address to a host within the internal network (LAN).