ZyXEL Communications VMG4325-B10A, User Manual

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Chapter 15 Firewall
VMG4380-B10A / VMG4325-B10A User’s Guide
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The following table describes the labels in this screen.
Table 78
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.