Features; Firewall - D-Link DSL-245GE User Manual

Section 4 - Configuration
The router's firewall protects your network from malicious attacks over the
Internet. To access this page, go to Features > Firewall. It is recommended to
leave all values at their default Enable setting.

Firewall

Enable DOS Denial of Service (DoS) protection prevents attacks such as Ping of
and Portscan Death and others as the following described.
Protection:
SYN/TCP reset
TCP reset breaks the three-way TCP connection between two parties
attack: by sending a spoofed RST packet.
SYN/RST attack:
SYN/RST attack sends continuous SYN packets to a targeted network
device, causing the device to spawn a half-open connection by
sending back a TCP SYN-ACK packet (Acknowledge) and waiting for
a packet in response from the sender address (response to the ACK
packet).
SYN/FIN attack: This type of Denial of Service attacks a targeted device by continuously
sending illegitimate SYN-FIN packets.
The Ping of Death attack aims to disrupt a targeted network
Ping/Ping of
device by sending abnormally large packets.
Death attack:
FIN/URG/PSH A URG-ACK-PSH-FIN flood attack brings down a device by sending
attack: illegitimate URG-ACK-PSH-FIN packets.
Xmas attack: Christmas tree attack sends crafted TCP packet to obtain information
about the target system.
Null scanning In Null Scanning attack, a packet without any flags of the TCP header
attack: tries to exploit a system.
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D-Link DSL-245GE User Manual

Features

Firewall
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