Chapter 16 Firewall
16.2 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.
Figure 92 Security Settings > Firewall
The following table describes the labels in this screen.
Table 65 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. |
|
|
16.3 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 E on page 381 for some examples.
| 217 |
|
|