Airlink AR570WV2 User Manual - Page 65
Packet Filters
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3.3.1 Packet Filters Packet Filters allows you to control access to a network by analyzing the incoming and outgoing packets and letting them pass or halting them based on the IP address of the source and destination. Outbound Filter applies to all outbound packets but Inbound Filter applies only to packets that are destined to Virtual Servers or DMZ host. If you want to restrict users from accessing certain Internet applications/services (e.g. Internet websites, email, FTP etc.) by their IP addresses, you can set up the filtering rules here. Packet filters can be helpful in securing or restricting your local network. Example: Computers with IP addresses between 192.168.2.20 to 192.168.2.50 have no restriction on accessing any network services, while other computers are all blocked. Meanwhile, computers with IP addresses between 192.168.2.100 to 192.168.2.199 are allowed to send Email (port 25), receive E-mail (port 110), and browse Internet (port 80). 61