Config Guide

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Through this page can set whether to enable the input, output firewall, at the same time
can set the firewall input and output rules, using these Settings can prevent some
malicious network access, or restrict internal users access to some resources of the
external network, improve security.
Firewall rule set is a simple firewall module. This feature supports two types of rules: input
rules and output rules. Each rule is assigned an ordinal number, allowing up to 10 for each
rule.
Considering the complexity of firewall Settings, the following is an example to illustrate:
Table 31 - Network Firewall
Parameter
Description
Enable Input Rules
Indicates that the input rule application is enabled.
Enable Output Rules
Indicates that the output rule application is enabled.
Input/Output
To select whether the currently added rule is an input or
output rule.
Deny/Permit
To select whether the current rule configuration is disabled
or allowed;
Protocol
There are four types of filtering protocols: TCP | UDP |
ICMP | IP.
Src Port Range
Filter port range
Src Address
Source address can be host address, network address, or
all addresses 0.0.0.0; It can also be a network address
similar to *.*.*.0, such as: 192.168.1.0.
Dst Address
The destination address can be either the specific IP
address or the full address 0.0.0.0; It can also be a
network address similar to *.*.*.0, such as: 192.168.1.0.
Src Mask
Is the source address mask. When configured as
255.255.255.255, it means that the host is specific. When
set as 255.255.255.0, it means that a network segment is
filtered.
Dst Mask
Is the destination address mask. When configured as
255.255.255.255, it means the specific host. When set as
255.255.255.0, it means that a network segment is
filtered.
After setting, click [Add] and a new item will be added in the firewall input rule, as shown
in the figure below: