ZyXEL VoIP Router Prestige 2602R-61 91-006-024004 Manual Do Utilizador

Prestige 2602R Series User’s Guide

Chapter 12 Firewalls

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• 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.