The Firewall Rule Screen - ZyXEL Communications P-660HW-Tx v3 User Manual

9.3 The Firewall Rule Screen

You may define firewall rules to allow or block certain types of traffic in or out of
your network.
For example, you may create rules to:
• Block certain types of traffic, such as Telnet, from the LAN to the Internet.
• Allow certain types of traffic, such as Lotus Notes database synchronization,
from specific hosts on the Internet to specific hosts on the LAN.
• Allow someone on the WAN to access a web server on your LAN.
These custom rules work by comparing the source IP address, destination IP
address and IP protocol type of network traffic to rules set by the administrator.
Your customized rules take precedence and override the ZyXEL Device's default
rules.
Note: The ordering of your rules is very important as rules are applied in turn.
Refer to Section 9.5 on page 200
Select Custom from the General screen. The Rules tab will appear. Click the tab
to go to Rules screen. This screen displays a list of the configured firewall rules.
Note the order in which the rules are listed.
Figure 62 Security > Firewall > Rules
P-660HW-Tx v3 User's Guide
for more information.
Chapter 9 Firewalls
189