advanced persistent threat on our EAS server?

It seems to me like someone downloaded a script or something and is targeting the FQDN of our EAS server. I'm not 100% sure it isn't one of the MSSP companies we are late on signing an agreement with. Anyways.

We've installed RDPguard on the server in question, and it seems to be properly blocking the ip addresses in question, one by one. Three attempts, then it blocks that ip address. Within 5 minutes, it's another ip address that it …

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