ZyXEL Communications P-660HN-51 - 10.2 The Firewall Screen; 10.3 The Protocol Screen

Chapter 10 Firewall
P-660HN-51 User’s Guide
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10.2 The Firewall Screen
Use this screen to set the security level of the firewall on the Zyxel Device. Firewall rules are grouped
based on the direction of travel of packets to which they apply.
Click Security Settings > Firewall to display the following screen. Select a direction of travel of packets for
which you want to configure firewall rules.
Figure 58 Security Settings > Firewall
The following table describes the labels in this screen.
10.3 The Protocol Screen
You can configure customized services and port numbers in the Protocol screen. For a comprehensive
list of port numbers and services, visit the IANA (Internet Assigned Number Authority) website. See
Appendix D on page 284 for some examples.
Click Security Settings > Protocol to display the following screen.
Table 39 Security Settings > Firewall
LABEL DESCRIPTION
Low Select Low to allow LAN to WAN and WAN to LAN packet directions.
Medium Select Medium to allow LAN to WAN but deny WAN to LAN packet directions.
High Select High to deny LAN to WAN and WAN to LAN packet directions.
Apply Click Apply to save your changes.
Cancel Click Cancel to restore your previously saved settings.