As the dependency of business on digital services to offer their products increases, their vulnerability to cyberattacks increases. In this sense, besides providing innovative and flexible services, busi- ness owners must focus on investing in robust cybersecurity mechanisms to prevent cyberattacks. Distributed Denial of Service (DDoS) attacks remains one of the most dangerous cyberattacks, leading to several prob- lems, such as service disruption, financial loss, and reputation harm, for companies and end-users. Even though several providers offer protections for different types of DDoS attacks, there is still a lack of catalogs or solu- tions that help network operators to access and filter information in order to select the most suitable protection for a specific demand. Thus, in this paper, a platform for offering and recommendation of DDoS protection, named ProtectDDoS, is proposed. ProtectDDoS provides a blockchain- based catalog where DDoS protection providers can announce details regarding their services, while interested users can filter or obtain rec- ommendations of DDoS protection according to their specific demands (e.g., price, attacks supported, and geolocation constraints). ProtectD- DoS provides a smart contract that maintains the integrity of the data about the protections available and provides tamper-proof reputations. To evaluate the feasibility and effectiveness of ProtectDDoS, a proto- type was implemented and a case study conducted. Further, a discussion concerning additional costs, including the interaction with the smart contract, is provided.