We are using SG-200, SG-300, and SG-350 switches in our network. The SG-200 and SG-300 switches have a section in the menu under SECURITY>Mgt Access Method called Access Profiles that allow you to set a specific IP inside the network from which you can manage the Switch. Only that IP address and only a specific protocol. I've set it up on all of the SG-200s and SG-300s, works great.
On the SG-350, there is no section for that. When I look in the user manual for the S-350, SG350x and SG550x, it says it should be there. We're on the newest firmware updates for all of the switches. Attached images show what I'm referencing.
