DDoS attack

Mon Dec 9 23:24:04 UTC 2019

see also:   https://en.wikipedia.org/wiki/Smurf_attack

On Mon, Dec 9, 2019 at 12:09 PM ahmed.dalaali at hrins.net <
ahmed.dalaali at 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
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