[CentOS-mirror] DDoS attack

Wed Oct 25 11:40:00 UTC 2023
ariel sabiguero yawelak <asabigue at fder.edu.uy>

We had to implement equivalent filtering rules during the weekend from 
network 223.67.0.0/16... and after your experience, we will start 
blocking 182.255.33.0/24 too.

regards


ariel

On 25/10/23 8:24, Alex Iribarren wrote:
> Hi all,
>
> This morning we stopped a DDoS attack on our mirror coming from China. 
> The traffic was somewhat similar to what we've discussed in the 
> past[1], except this time they weren't range requests, they were 
> downloading the full iso files. The worst offenders were 223.67.0.0/16 
> and 182.255.33.0/24, in case you want to check your mirrors for signs 
> of abuse.
>
> Cheers,
> Alex
>
>
> [1] 
> https://lists.centos.org/pipermail/centos-mirror/2022-April/077440.html
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