User's Manual

107
14.31 Security >> Firewall
Picture 141 - Network firewall Settings
The user can set whether to enable the input through this page, output firewall and 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, which
can 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 32 - 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.