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ZyXEL Communications P-660H-Tx v2 User Manual

Page 122

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Chapter 8 Firewalls

P-660H-Tx v2 User’s Guide

122

• To selectively block/allow inbound or outbound traffic between inside host/networks and

outside host/networks. Remember that filters can not distinguish traffic originating from
an inside host or an outside host by IP address.

• The firewall performs better than filtering if you need to check many rules.
• Use the firewall if you need routine e-mail reports about your system or need to be alerted

when attacks occur.

• The firewall can block specific URL traffic that might occur in the future. The URL can be

saved in an Access Control List (ACL) database.