H3140 Maintenance Management Guide
Steps
Configure the Firewall
1. On the main page of the H3140, select Internet > Security > Firewall to the Fire-
wall page, see Figure 4-10.
Figure 4-10 Firewall Page
2. Set the parameters. For a description of the parameters, refer to Table 4-5.
Table 4-5 Firewall Parameter Descriptions
Parameter Description
Enable To enable the firewall level to be configured, select this check box.
Firewall Level
High: allows legal access from the WAN but forbids Internet de-
vices from sending ping packets to the WAN interface of the
H3140.
Middle(Recommended): allows legal access from the WAN and
blocks dangerous data from the Internet.
Low: allows legal access from the WAN and allows Internet de-
vices to send ping packets to the WAN interface of the H3140.
3. Click Apply button to apply the changes.
Configure the Anti-Dos Attack
4. On the main page of the H3140, select Internet > Security > Firewall to the An-
ti-DoS Attack page, see Figure 4-11.
26 SJ-20210621164956-009 | 2021-12-07(R1.0)
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