The Smurf Amplifier Registry is a blacklist

Blacklist (computing)

In computing, a blacklist or block list is a basic access control mechanism that allows everyone access, except for the members of the black list . The opposite is a whitelist, which means allow nobody, except members of the white list...

 of networks

Computer network

A computer network, often simply referred to as a network, is a collection of hardware components and computers interconnected by communication channels that allow sharing of resources and information....

 on the Internet

Internet

The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite to serve billions of users worldwide...

 which have been misconfigured in such a way that they can be used as smurf amplifiers for smurf

Smurf attack

The Smurf attack is a way of generating significant computer network traffic on a victim network. This is a type of denial-of-service attack that floods a target system via spoofed broadcast ping messages....

 denial of service attacks.

It can probe networks for vulnerability to smurf amplification, and then will either add them to its database, or remove them from the database, depending on the result of the test.