I'm working on ArcMap 10.6 and I would like to connect to a server in an office. Everything I have found online is about connecting to an ArcGIS Server. I just want to connect to a regular server sitting in a closet.
And secondly, how would I connect to the same server remotely?
Can you provide some more clarification on what you mean "... connect to a server in an office."?
Are you referring to ArcGIS Server / File Server / other Server?
If ArcGIS Server here is some doc: https://desktop.arcgis.com/en/arcmap/latest/map/working-with-arcmap/connect-to-arcgis-server-from-ar...
In order to connect remotely, there are multiple ways to do this based on your IT policies. Example, connect to network via VPN then to machine or make the server publicly available.
It is a file server.
Ah, ok. That makes this much easier. Follow this documentation for adding folders (that you have access to) in ArcMap: https://desktop.arcgis.com/en/arcmap/latest/map/working-with-arcmap/using-folder-connections.htm
For making this available remotely, that would be up to your IT department.