ZyXEL VMG1312-B10A User Guide - Page 214

Chapter 18 Firewall Table 88 Access Control: Add/Edit (continued) LABEL DESCRIPTION Custom This field is displayed only when you select Specific Protocol in Select Protocol. Destination Port Enter a single port number or the range of port numbers of the destination. Policy Use the drop-down list box to select whether to discard (DROP), deny and send an ICMP destination-unreachable message to the sender of (REJECT) or allow the passage of (ACCEPT) packets that match this rule. Direction Use the drop-down list box to select the direction of traffic to which this rule applies. 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. Apply Click Apply to save your changes. Cancel Click Cancel to exit this screen without saving. 18.5 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 118 Security > Firewall > DoS The following table describes the labels in this screen. Table 89 Security > Firewall > DoS LABEL DESCRIPTION DoS Protection Select Enable to enable protection against DoS attacks. Blocking Deny Ping Response Select Enable to block ping request packets. VMG1312-B Series User's Guide 214