Chapter 15 Firewall
The following table describes the labels in this screen.
Table 64 Security > Firewall > General
LABEL | DESCRIPTION |
High | This setting blocks all traffic to and from the Internet. Only local network traffic and LAN to WAN |
| service (Telnet, FTP, HTTP, HTTPS, DNS, POP3, SMTP) is permitted. |
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Medium | This is the recommended setting. It allows traffic to the Internet but blocks anyone from the |
| Internet from accessing any services on your local network. |
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Low | This setting allows traffic to the Internet and also allows someone from the Internet to access |
| services on your local network. This would be used with Port Forwarding, Default Server. |
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Custom | This setting allows the customer to create and edit individual firewall rules. |
| Firewall rules can be created in the Default Action screen (Section 15.3 on page 171) and Rules |
| screen (Section 15.4 on page 173). |
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Off | This setting is not recommended. It disables firewall protection for your network and could |
| potentially expose your network to significant security risks. This option should only be used for |
| troubleshooting or if you intend using another firewall in conjunction with your ZyXEL router. |
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Apply | Click this to save your changes. |
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Cancel | Click this to restore your previously saved settings. |
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15.3 The Default Action Screen
Use this screen to set the default action that the firewall takes on packets that do not match any of the firewall rules. Click Security > Firewall > Default Action to display the following screen.
Figure 86 Security > Firewall > Default Action
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