ZyXEL Communications VMG5313-B30A Guide de l'utilisateur télécharger pdf (Page 222)

Chapter 15 Firewall

VMG1312-B Series User’s Guide

222

The following table describes the labels in this screen.

Table 75 Security > Firewall > Access Control

LABEL DESCRIPTION

DoS Protection 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 the Enable check box to enable protection against DoS attacks.

Add new ACL

rule

Click this to go to add a filter rule for incoming or outgoing IP traffic.

# This is the index number of the entry.

Name This displays the name of the rule.

Src IP This displays the source IP addresses to which this rule applies. Please note that a blank

source address is equivalent to Any.

Dst IP This displays the destination IP addresses to which this rule applies. Please note that a

blank destination address is equivalent to Any.

Service This displays the transport layer protocol that defines the service and the direction of traffic

to which this rule applies.

Action This field displays whether the rule silently discards packets (DROP), discards packets and

sends a TCP reset packet or an ICMP destination-unreachable message to the sender

(REJECT) or allows the passage of packets (ACCEPT).

Modify Click the Edit icon to edit the rule.

Click the Delete icon to delete an existing rule. Note that subsequent rules move up by one

when you take this action.

Click the Move To icon to change the order of the rule. Enter the number in the # field.

1 2 ... 217 218 219 220 221 222 223 224 225 226 227 ... 375 376

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ZyXEL Communications VMG5313-B30A Guide de l'utilisateur Page 222