The good and the bad of GRE tunnels in DDoS scrubbing

The good and the bad of GRE tunnels in DDoS scrubbing

One of the most common ways to protect a network from large volumetric DDoS attacks is to divert the malicious traffic to a scrubbing centre. These dedicated networks remove harmful packets and return only the clean traffic back to your network. GRE tunnels are...
Why DDoS botnets are so hard to take down?

Why DDoS botnets are so hard to take down?

Every time law enforcement announces a major DDoS botnet operation, the Internet seems to exhale in relief. Servers are seized, operators arrested, domains pulled out from under them. For a moment, attack volumes dip, and the collective hum of malicious traffic grows...