# Generic Filter *** What the Prefilter allows through is subsequently handled by the generic mitigation. This software is powered by a cluster of Intel Xeon or Epyc systems, equipped with Mellanox network cards, and engineered for high performance and scalability. #### Protocol Attack Protection The post-filtering can block the following types of attacks: * Invalid packets * Anomalous TCP flag combinations (e.g., no flag, SYN-FIN, SYN frag, LAND attack) * SYN-ACK amplification attack protection * IP options * Packet size validation (prevents 'Ping of Death') * TCP/UDP/SSL/ICMP flood protection * Per-connection traffic control #### Challenge-based Authentication Our software also utilizes various challenge-based authentication mechanisms: * TCP SYN cookies, SYN authentication * ACK authentication * Spoof detection * DNS authentication #### Zero-day Automated Protection (ZAPR) We also leverage machine learning algorithms for real-time attack pattern recognition and filtering, which offers: * ZAPR: Machine Learning powered attack pattern recognition * TCP progression tracking * Capability to prevent zero-day attacks * No pre-configuration or manual intervention needed * Fast, automated response By incorporating advanced AI techniques, our system adapts to new forms of network-level attacks, offering robust security with minimal lag or disruption. This allows us to provide our users with a stable, uninterrupted experience. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.packets-decreaser.net/ddos-protection/layer-4/how-we-mitigate-ddos-attacks/generic-filter.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.