DDoS attacks are a constant threat to businesses and organizations, delaying service performance or shutting down websites entirely.
This process involves comparing signatures and examining different attributes of the traffic, including IP addresses, cookie variations, HTTP headers, and browser fingerprints.
Filtering can be done through anti-DDoS technology like connection tracking, IP reputation lists, deep packet inspection, blacklisting/whitelisting, or rate limiting.
[2] Manual DDoS mitigation is no longer recommended due to the size of attacks often outstripping the human resources available in many firms/organizations.
A number of vendors offer "DDoS-resistant" hosting services, mostly based on techniques similar to content delivery networks.