Smurf attack
smurfing

Today, administrators can make a network immune to such abuse, therefore very few networks remain vulnerable to Smurf attacks.

Broadcasting may be abused to perform a type of DoS-attack known as a Smurf attack.

A Smurf amplifier is a computer network that lends itself to being used in a Smurf attack.

Describe the operation of a smurf attack involving network directed ICMP packets.

Security experts say it is simple to configure networks so they cannot be used in a smurf attack, yet many sites do not know to take these steps.

Internet Express is committed to implementing the configuration required to ensure that Internet Express infrastructure cannot be used as the host of smurf attacks.

In the late 1990s, many IP networks would participate in Smurf attacks if prompted (that is, they would respond to ICMP requests sent to broadcast addresses).

(This example does not protect a network from becoming the target of Smurf attack; it merely prevents the network from participating in a Smurf attack.)

A smurf attack relies on misconfigured network devices that allow packets to be sent to all computer hosts on a particular network via the broadcast address of the network, rather than a specific machine.

On February 7, 2000, a smurf attack generating over 1 gigabit per second of ICMP traffic was launched against Yahoo!'s routers, causing their websites to be inaccessible to the world for hours.

Stacheldraht uses a number of different DoS attacks, including UDP flood, ICMP flood, TCP SYN flood and Smurf attack.

It works very similarly to the Smurf attack in that many computers on the network will respond to this traffic by sending traffic back to the spoofed source IP of the victim, flooding it with traffic.

DDoS tools like stacheldraht still use classic DoS attack methods centered on IP spoofing and amplification like smurf attacks and fraggle attacks (these are also known as bandwidth consumption attacks).

The second type, known as a smurf attack, again involves the use of compromised machines, but it also employs a large third-party network of computers to "amplify" the data used in the attack and greatly increases the effectiveness of the assault.

The Tribe Flood Network or TFN is a set of computer programs to conduct various DDoS attacks such as ICMP flood, SYN flood, UDP flood and Smurf attack.

Smurf amplifiers act to worsen the severity of a Smurf attack because they are configured in such a way that they generate a large number of ICMP replies to the victim at the spoofed source IP address.

The firewall protects against a wide range of Denial of Service attacks, including Ping of Death, SYN/FIN Flooding, Smurf Attacks, Port Scans, FRAG Attack and IP Spoofing.

The Smurf Attack is a distributed denial-of-service attack in which large numbers of Internet Control Message Protocol (ICMP) packets with the intended victim's spoofed source IP are broadcast to a computer network using an IP Broadcast address.

ICMP Echo Request attacks (Smurf Attack) can be considered one form of reflected attack, as the flooding host(s) send Echo Requests to the broadcast addresses of mis-configured networks, thereby enticing hosts to send Echo Reply packets to the victim.

A fraggle attack is a variation of a Smurf attack where an attacker sends a large amount of UDP traffic to ports 7 (echo) and 19 (chargen) to an IP Broadcast Address, with the intended victim's spoofed source IP address.

When preparing a network to forward SDB packets, care must be taken to filter packets so that only desired (e.g. WoL) SDB packets are permitted - otherwise the network may become a participant in DDoS attacks such as the Smurf Attack.