ZyXEL Communications P-660H-Tx v2 - Manual (Page 122)

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.