Question

DoS defense: What does blocking IP directed broadcast prevent

a) Spoofing attacks
b) Traffic amplification
c) SYN flooding
d) Smurf attacks

Answer 1

Blocking IP directed broadcast helps defend against spoofing attacks, traffic amplification, and smurf attacks.

Step-by-step explanation:

Blocking IP directed broadcast helps defend against spoofing attacks, traffic amplification, and smurf attacks.

IP directed broadcast is a type of network packet that is sent to all hosts within a specific network. By blocking these broadcasts, you prevent attackers from using them to carry out spoofing attacks, where they impersonate another IP address to gain unauthorized access or perform malicious activities.

Blocking IP directed broadcast also prevents traffic amplification attacks, which involve sending a request using a spoofed source IP address to multiple hosts, causing them to respond to the targeted victim's IP address and overwhelming its network capacity.

Smurf attacks are another type of network attack that can be prevented by blocking IP directed broadcast. In a smurf attack, an attacker sends spoofed ICMP echo requests to an IP broadcast address, causing all hosts on the network to respond to the victim's IP address and overload its network.