Hello!
Just you to know that nhiRmtIn is about the eHealth Remote Message Transfer In (Distributed Architecture).
If was not a Distributed Environment, the errors can be ignored, but this is not your case, because you said Console's in Plural, so you have a Distributed Environment.
Most likely this System is being scanned by something like security scans, so I would recommend you to check.
In the worst case, it there is no External Security Scan/AntiVirus or Firewall dropping the packages/connection, maybe the Database can be corrupted so it will be suggested to destroy and recreate DB.
Anyway, I would recommend you to open a CA Support Ticket to help you further.