19216811.liveChapter 7 Firewalls
P-660R-F1 Series User’s Guide
91
Click
Security > Firewall > Rules
to bring up the following screen. This screen displays a list of
the configured firewall rules. Note the order in which the rules are listed.
Figure 55
Security > Firewall > Rules
The following table describes the labels in this screen.
Table 32
Security > Firewall > Rules
LABEL
DESCRIPTION
Firewall Rules
Storage Space
in Use
This read-only bar shows how much of the ZyXEL Device'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
This drop-down list box 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
This drop-down list box 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 drop-down list box displays the services to which this firewall rule applies.
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
).
Schedule
This field tells you whether a schedule is specified (
Yes
) or not (
No
).
Log
This field shows you whether a log is created when packets match this rule (
Yes
)
or not (
No
).