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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 26- 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
255.255.255.255, it means it is a specific host. When it is set as a
subnet mask of type 255.255.255.0, it means that the filter is a
network segment;
Dst Port Range
It is the destination address mask. When it is configured as
255.255.255.255, it means it is a specific host. When it is set as a
subnet mask of 255.255.255.0 type, it means that a network
segment is filtered;
After setting, click [Add], a new item will be added to the firewall output rules, as shown in the
figure below:
Picture 45- Firewall rules list
Then select and click the button [Submit].
In this way, when the device runs: ping 192.168.1.118, it will not be able to send data packets to