[Firewall]

Set the functions for the firewall.

A firewall can improve security. It prevents unauthorized access from external computers or malicious programs. When the firewall is enabled, only the services and ports that are allowed will be able to access the product.

• As a basic policy of filtering, all OUTPUT is allowed (ACCEPT) and both INPUT and FORWARD are not allowed (DROP).

The setting items are as follows:

Enable

Enable or disable the firewall function.

Allow Services And Ports

Set the service or port to allow communication.

◦	Available only if you have selected [Enabled] in the [Enable] menu.

Custom Settings

Specify the ICMP type or the port number of TCP or UDP to allow communication.

◦	Available only if you have selected [Enabled] in the [Enable] menu.