Denial-of-service (DoS) attacks target enterprise IT infrastructure i.e. Applications, networks and systems and flood them with traffic load to either crash or make their services unresponsive. A Distributed Denial of Service ( DDoS) on the other hand is more of coordinated and multiple sources , disable the services of target. These attack sources are part of the bot network and are distributed across globe and controlled by the threat actors. Identification , defending the DoS and DDoS attacks are difficult and enterprises need to prepare and should have the Denial of service response plan to mitigate or reduce the impact of the attack.Threat actors includes hacktivists, Nation State Driven or Financially Motivated Attackers whose motive is moving up the ladder from IT infra to Applications.
High level below are some of the controls to defend against Denial of service attacks include
1. Rate Limit