WS-431E
4G Router
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4.6.2. NAT FUNCTION
1. IP address masquerading
IP address masquerading refers to the practice of modifying the source IP address of
outgoing data packets to a specific interface's IP address on the router. When the
"Masquerading" option is selected, the system will change the source IP address of outgoing
data packets to the IP address of the WAN port on the router.
Note: IP dynamic masquerading and MSS clamping must be turned on on WAN port, and IP
dynamic masquerading and MSS clamping are prohibited on LAN port.
IP address masquerading settings are located in the "Firewall-Zone Settings" interface.
Figure 36 IP address camouflage Settings
2.SNAT
Source NAT is a special form of packet masquerading, which changes the source address of
packets leaving the router and fixes the source IP address of packets leaving the router as a
specific IP to send out. When using it, you should disable the IP dynamic masquerading of the
WAN port.
