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5.35 Security >> Firewall
Figure 5-35-1 Firewall Setting Page Screenshot
Through this page, you can set whether to enable the input and output firewalls, and at the same time, you
can set the input and output rules of the firewall. Use these settings to prevent malicious network access, or
restrict internal users from accessing some resources of the external network, and improve safety.
The firewall rule setting is a simple firewall module. This function supports two kinds of rules: input rules and
output rules. Each rule will be assigned a serial number, and a maximum of 10 each rule can be set.
Taking into account the complexity of firewall settings, the following will illustrate with an example:
Whether to enable Input Rules
Whether to enable Output Rules
Select the current rule as an input or output rule
Choosing the current rule is denied or allowed
There are four types of protocols: TCP, UDP, ICMP and IP
The source address can be the 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.
The destination address can be a specific IP address or all
addresses 0.0.0.0; it can also be a network address similar to
*.*.*.0, such as 192.168.1.0.
It is the source address mask. When it is configured as
255.255.255.255, it means it is a specific host. When it is set as a
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