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Security >> Firewall
Picture 56 - Firewall
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:
Table 32 - Web Firewall
parameter
Description
Enable Input Rules
whether enable Input Rules
Enable Output Rules
Whether enable Output Rules
input/output
Select the current rule as an input or output rule
Deny/permit
Choose the current rule is deny or allowed;
protocol
There are four types of protocols
：
TCP
，
UDP
，
ICMP
，
IP
。
Port range
Port range
Src Address
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.
Dst Mask
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.
Src Port Range
It is the source address mask. When it is configured as
