Anycast Networks and Geographic Distribution

Anycast networking provides powerful DDoS protection by distributing traffic across multiple locations. When attacks target an anycast address, traffic automatically routes to the nearest available node. This distribution prevents any single location from being overwhelmed, effectively absorbing volumetric attacks.

Geographic distribution of services improves resilience against regional attacks. Deploy services across multiple data centers in different geographic regions. Use content delivery networks (CDNs) to cache static content close to users. This distribution not only improves performance but also provides multiple attack absorption points.

Edge filtering at anycast nodes provides early attack mitigation. Configure each anycast node to filter attack traffic before it reaches origin servers. Implement consistent filtering rules across all nodes while allowing location-specific adjustments. This approach stops attacks at the network edge, protecting core infrastructure.

Intelligent anycast routing improves attack mitigation effectiveness. During attacks, automatically adjust routing to direct attack traffic to scrubbing centers or high-capacity nodes. Implement BGP communities to signal attack conditions and trigger routing changes. This dynamic response capability helps maintain service availability during attacks.