Re: DDoS attack

[Christopher Morrow <morrowc.lists () gmail com>]

I'd note that: "what prefixes?" isn't answered here... like: "what is
the thing on your network which is being attacked?"

On Mon, Dec 9, 2019 at 3:08 PM ahmed.dalaali () hrins net
<ahmed.dalaali () hrins net> wrote:
> Dear All,
>
> My network is being flooded with UDP packets, Denial of Service attack, soucing from Cloud flare and Google IP 
> Addresses, with 200-300 mbps minimum traffic, the destination in my network are IP prefixes that is currnetly not 
> used but still getting traffic with high volume.
> The traffic is being generated with high intervals between 10-30 Minutes for each time, maxing to 800 mbps
> When reached out cloudflare support, they mentioned that there services are running on Nat so they can’t pin out 
> which server is attacking based on ip address alone, as a single IP has more than 5000 server behind it, providing 1 
> source IP and UDP source port, didn’t help either
> Any suggestions?
>
> Regards,
> Ahmed Dala Ali