User's Manual

Section 4 – Troubleshooting
D-Link DSL-2740E User Manual
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DOS settings
A denial-of-service (DoS) attack is characterized by an explicit attempt by
attackers to prevent legitimate users of a service from using that service.
Port scan protection is designed to block attempts to discover vulnerable ports or
services that might be exploited in an attack from the WAN.
Choose ADVANCED > DOS settings. The page shown in the right figure
appears. In this page, you may configure IP firewall function.
Check the protections and click on Apply Changes to enable the protection. You
might consult your ISP for which protection should be enabled.