They were really casual about it too, it was more an addendum to an email with the contents "Oh, btw we need you to open up for these IP-adresses". In total it was about 4 million IP-adresses they wanted opened on ALL ports through ALL firewalls so as to not cause "unneeded delays to the project". Where I work, a supplier actually wanted us to open up for all of our firewalls from our production environment, so that they could upload production data to a Cloudflare server to analyze it.Īnd since they didn't know which IP-adresses those servers ran on, they requested that we opened up for every single IP-address that Cloudflare ran on, the largest range being a /12 if I remember correctly.
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