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DVA-G3340S User Manual Page 64 of 94 V1.00 AU
Null Scan attack
SYN/RST attack
SYN/FIN Scan
IKE from WAN
RIP from WAN
DHCP from WAN
A DoS "denial-of-service" attack is characterized by an explicit attempt by attackers
to prevent legitimate users of a service from using that service. Examples include:
attempts to "flood" a network, thereby preventing legitimate network traffic,
attempts to disrupt connections between two machines, thereby preventing access to
a service, attempts to prevent a particular individual from accessing a service, or,
attempts to disrupt service to a specific system or person.
Port scan protection is designed to block attempts to discover vulnerable ports or
services that might be exploited in an attack from the WAN.
The Service Filtering options allow you to block FTP, Telnet response, Pings, etc,
from the external network. Check the category you want to block to enable filtering
of that type of packet.
When you have selected the desired Firewall policies, click the Apply button to
enforce the policies. Remember to save any configuration changes.