3 Root sessions no SSH

Hi !

I have 2 ReadyNAS RR2304.

They are connected in a domain with Active Directory sync for SMB. No SSH enabled. 

One has users data and the second one has a copy of the first one using the backup feature and I also store my servers backups.

I noticed that on the first one on the Connections menu it has 3 connections to my Domain Controller's IP using the Root account on Misc protocol.

Is this expected ?

Thanks for you input