ZyXEL Communications AMG1302 Manual Do Utilizador

Chapter 15 Firewall

AMG1302/AMG1202-TSeries User’s Guide

Click Security > Firewall > Rules to display the following screen. This screen displays a list of the 
configured firewall rules. Note the order in which the rules are listed.

Note: The firewall configuration screen shown in this section is specific to the following 

devices: P-The ordering of your rules is very important as rules are applied in turn.

Security > Firewall > Rules 

The following table describes the labels in this screen. 

Security > Firewall > Rules

Firewall Rules Storage 
Space in Use

This read-only bar shows how much of the AMG1302/AMG1202-TSeries's memory for 
recording firewall rules it is currently using. When you are using 80% or less of the 
storage space, the bar is green. When the amount of space used is over 80%, the 
bar is red.

Packet Direction

Use the drop-down list box to select a direction of travel of packets for which you 
want to configure firewall rules.

Create a new rule 
after rule number 

Select an index number and click Add to add a new firewall rule after the selected 
index number. For example, if you select “6”, your new rule becomes number 7 and 
the previous rule 7 (if there is one) becomes rule 8.

The following read-only fields summarize the rules you have created that apply to 
traffic traveling in the selected packet direction. The firewall rules that you configure 
(summarized below) take priority over the general firewall action settings in the 
General screen.

#

This is your firewall rule number. The ordering of your rules is important as rules are 
applied in turn. 

Active

This field displays whether a firewall is turned on or not. Select the check box to 
enable the rule. Clear the check box to disable the rule.

Source IP Address

This column displays the source addresses or ranges of addresses to which this 
firewall rule applies. Please note that a blank source or destination address is 
equivalent to Any.

Destination IP Address This column displays the destination addresses or ranges of addresses to which this 

firewall rule applies. Please note that a blank source or destination address is 
equivalent to Any.

Service 

This column displays the services to which this firewall rule applies. See 

 for more information.

Action

This field displays whether the firewall 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 (Permit).

Source Interface

This column displays the source interface to which this firewall rule applies. This is 
the interface through which the traffic entered the AMG1302/AMG1202-TSeries. 
Please note that a blank source interface is equivalent to Any.