Chengdu Ebyte Electronic Technology Co,;Ltd
E880-IR01 user manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co,;Ltd
35
4.4.7.1 IP Dynamic masquerade
（
MASQ
）
MASQ is MASQUREADE. Address masquerading converts the source IP of the outgoing packet into the IP address
of an interface on the router. As shown in the figure, if IP masquerading is checked, the system will modify the source IP
address of the data packet out of the router to the WAN port IP address, here, the default method is to enable IP dynamic
masquerading.
4.4.7.2 Communication rule (SNAT&DNAT)
In Network-> Firewall-> Communication Rules, there is a column called Source NAT. Source NAT is a special
form of packet masquerading. It changes the source address of packets leaving the router. For example, the source IP
address of the packet that leaves the router is fixedly changed to 192.168.1.1(real IP: 192.168.10.1). The setting interface
is as shown below. The name is EBYTE, which is the display interface after the setting. The name is TEST, which is the
display interface when adding.
In this device, Source NAT is not added by default. When using this function, users can make related settings
according to related requirements.
DNAT is the replacement of the destination address. The destination IP address of the packets entering the router
with the destination address being the IP of the WAN port is replaced with the IP address set by users.
4.4.7.3 Port forwarding
Port forwarding allows computers from the Internet to access computers or services in the private LAN. For
example, if you forward TCP data on port 82 on the external network to port 82 on the internal network 192.168.10.119,
you will have the following settings.
