Linkskey LKR-604 - Manual (Page 27)

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3.7 Firewall
3.7.1 Firewall Options
The router provides extensive firewall protect by restricting connections to reduce the risk of
intrusion and defending against a wide array of common hacker attacks. However for applications
that require unrestricted access to the Internet, you can configure a specific client/server as a
demilitarized zone.
Firewall Options Select the functions that firewall supports. The selections include Enable Hacker
Attack Protect ,Discard PING from WAN side, Deny PING to the Gateway, Drop Port Scan packets,
Allow to Scan Security Port (113),Discard NetBIOS Packets, Accept Fragment Packets and Send
ICMP Packets When Error is Encountered.
3.7.2 Client Filtering
You can filter Internet client based on IP addresses, port, application types, and time of day.
For example, this screen shows that clients in the address rang 192.168.0.2-4 are permanently
restricted from using WEB(Port 80) are blocked from browsing the Internet from Monday through
Friday.