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When DoS, Port Scan, or Service Filtering Protection is enabled, it will create a firewall policy to protect your
network against the following:
Dos Protection
SYN Flood check
ICMP Redirection check
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.
Port Scan Protection
Nmap/FIN attack
URG/PSH attack
Xmas Tree Scan
Null Scan attack
SYN/RST attack
SYN/FIN Scan
Service Filtering
Ping from WAN
Telnet from WAN
FTP from WAN
DNS from WAN
IKE from WAN
RIP from WAN
DHCP from WAN
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