For this reason, null routes are often used on high-performance core routers to mitigate large-scale denial-of-service attacks before the packets reach a bottleneck, thus avoiding collateral damage from DDoS attacks — although the target of the attack will be inaccessible to anyone. Blackhole filtering can also be abused by malicious attackers on compromised routers to filter out traffic destined to a certain address.
Null routes are frequently utilized on high-performance core routers to prevent large-scale denial-of-service attacks before they reach bottlenecks, thereby avoiding collateral damage from DDoS assaults — although the target of the attack will be inaccessible. Blackhole filtering can also be misused by malicious attackers on compromised routers to filter out traffic intended for a specific address.