ZyXEL Communications P-3202HN-Ba, Руководство пользователя

Страница: 146 / 250

Chapter 12 Firewalls
IAD User’s Guide
146
12.3.1 Configuring Firewall Rules
Refer to Section 12.1.2 on page 138 for more information.
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. See
Appendix F on page 313 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).
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).
Modify Click the Edit icon to go to the screen where you can edit the rule.
Click the Remove icon to delete an existing firewall rule. A window
displays 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.
Order Click the Move icon to display the Move the rule to field. Type a number
in the Move the rule to field and click the Move button 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.
Apply Click Apply to save your changes back to the IAD.
Cancel Click Cancel to begin configuring this screen afresh.
Table 44 Security > Firewall > Rules (continued)
LABEL DESCRIPTION