When To Use The Firewall - ZyXEL Communications P-662HW-61 User Manual

• The firewall provides e-mail service to notify you of routine reports and when alerts
occur.

13.7.2.1 When To Use The Firewall

• To prevent DoS attacks and prevent hackers cracking your network.
• A range of source and destination IP addresses as well as port numbers can be specified
within one firewall rule making the firewall a better choice when complex rules are
required.
• 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.
Chapter 13 Firewalls
Prestige 662HW Series User's Guide
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