ZyXEL Communications FMG3024-D10A ユーザーズマニュアル

 Chapter 13 Firewall

FMG3024-D10A / FMG3025-D10A Series User’s Guide

Click Security > Firewall > DoS to display the following screen. Use this screen to enable or 
disable Denial of Service (DoS) protection. 

Security > Firewall > DoS

Each field is described in the following table.

This section provides some technical background information about the topics covered in this 
chapter.

Change the default password via web configurator.

Think about access control before you connect to the network in any way.

Limit who can access your Device.

Don't enable any local service (such as Telnet or FTP) that you don't use. Any enabled service could 
present a potential security risk. A determined hacker might be able to find creative ways to misuse 
the enabled services to access the firewall or the network.

For local services that are enabled, protect against misuse. Protect by configuring the services to 
communicate only with specific peers, and protect by configuring rules to block packets for the 
services at specific interfaces.

Keep the firewall in a secured (locked) room.

Security > Firewall > DoS

DoS Protection 
Blocking

DoS (Denial of Service) attacks can flood your Internet connection with invalid packets 
and connection requests, using so much bandwidth and so many resources that Internet 
access becomes unavailable. 

Select Enable to enable protection against DoS attacks or Disable to disable it.

Apply

Click Apply to save the DoS Protection settings.

Cancel

Click Cancel to restore your previously saved settings.