Xiamen Caimore Communication Technology Co.,Ltd
2 F, 37#, Wanghai Road, Software Park 2, Xiamen,China (361009)
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Tel:+86 592 5901215
web: en.caimore.com
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Picture 4-2-3
Example 2 of IP address filtering:
1
、
select “setup client IP filter”
2
、
Running rule: “receive packet matches following rules”, click “Apply” to save.
Read picture 4-2-4.
Instruction
：
if running rule select “receive packet matches following rules”, default rule
is : Gateway forbids all data packet go through except data packet of picture
4-2-5 configured.
Picture 4-2-4
3
、
Input parameters in IP rule.
This example parameter:
Name
：
enableipfilter02
LAN IP
：
192.168.1.23
WAN IP
：
121.204.201.13
Protocol
：
all
Direction
：
IN/OUT
Interface
：
PPP0
Read picture 4-2-3
，
then click “Submit” to save.
4
、
Explanation and Instruction
After this rule built, gateway will start IP address filtering function. According to
running rule “Receive packet matching following rule”, gateway forbid all data packet to
go through, but only allow protocol data packets (
select “ALL”
) from WAN
“121.204.201.13”(
select “IN/OUT” direction
) to go through PPPO interface
(select
PPP0 interface
). Usually this rule shields invalid IP address to go through gateway, can
reduce data flow, or as bank application, can shield other IP address access to bank IP
address to realize filtering functional and reduce data flow.
