Definition
Fast fluxing is a method of swiftly changing the IP addresses associated with domain names, making it challenging to trace and block malicious domains.
It uses botnets, which serve as reverse proxies between servers and perpetrators with malicious content. Cybercriminals use this technique to impede authorities from taking down criminal servers.
Main Types of Fast Flux Networks
- Single Flux: Each IP address is linked with a distinct node, shifting malicious activities from node to node to evade cybersecurity measures. The IP addresses have short lifespans (typically 3 to 10 minutes), and the node removes them from DNS, and the next node replaces it.
- Double Flux: It rotates IP addresses across nodes and changes authoritative name server’s IP addresses. This adds an additional layer of obfuscation, making it more difficult to trace malicious activities.