Configuring Firewall Rules - ZyXEL Communications ZyWALL 5 User Manual

ZyWALL 5 Internet Security Appliance
LABEL
Source Address 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 This drop-down list box displays the destination addresses or ranges of addresses to
Address which this firewall rule applies. Please note that a blank source or destination address is
equivalent to Any.
Service Type This drop-down list box displays the services to which this firewall rule applies. Please note
that a blank service type is equivalent to Any. See Table 10-6 for more information.
This is the specified action for that rule, either Block or Forward. Note that Block means
Action
the firewall silently discards the packet.
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 (Enabled) or
not (Disable).
Alert This field tells you whether this rule generates an alert (Yes) or not (No) when the rule is
matched.
Modify Click the edit icon to go to the screen where you can edit the rule.
Click the delete icon to delete an existing firewall rule. A window display asking you to
confirm that you want to delete the firewall rule. Note that subsequent firewall rules move
up by one when you take this action.
Insert Type the index number for where you want to put a rule. For example, if you type "6", your
new rule becomes number 6 and the previous rule 6 (if there is one) becomes rule 7.
Click Insert to display this screen and refer to the following table for information on the
fields.
Move Type a rule's index number and the number for where you want to put that rule. Click
Move to move the rule to the number that you typed. The ordering of your rules is
important as they are applied in order of their numbering.

10.6.2 Configuring Firewall Rules

Follow these directions to create a new rule.
In the Rule Summary screen, type the index number for where you want to put the rule. For
1.
example, if you type "6", your new rule becomes number 6 and the previous rule 6 (if there is one)
becomes rule 7.
Click Insert to display this screen and refer to the following table for information on the labels.
2.
10-8
Table 10-3 Rule Summary
DESCRIPTION
Firewall Screens