Operation Manual

Chapter 14 Firewall
SBG3300-N Series User’s Guide
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14.5 The DoS Screen
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.
Use the DoS screen to activate protection against DoS attacks. Click Security > Firewall > DoS
to display the following screen.
Figure 104 Security > Firewall > DoS
The following table describes the labels in this screen.
Enable Rate
Limit
Select this check box to set a limit on the upstream/downstream transmission rate for the
specified protocol.
Specify how many packets per minute or second the transmission rate is.
Scheduler Rules Select a schedule rule for this ACL rule form the drop-down list box. You can configure a
new schedule rule by click Add New Rule. This will bring you to the Security > Scheduler
Rules screen.
Filter
Description
Enter a description to help you identify the purpose of the ACL rule.
Apply Click Apply to save your changes.
Cancel Click Cancel to exit this screen without saving.
Table 77 Access Control: Add/Edit (continued)
LABEL DESCRIPTION
Table 78 Security > Firewall > DoS
LABEL DESCRIPTION
DoS Protection
Blocking
Select Enable to enable protection against DoS attacks.
Deny Ping
Response
Select Enable to block ping request packets.
Apply Click Apply to save your changes.
Cancel Click Cancel to exit this screen without saving.