While both machines are connected to the network, they “live” in a restricted subnet, the so-called “self-managed” zone.
It is recommended to use the USB 3.0 interface to copy data to and from either computer, although both can be VPN’d into the CfA trusted network domain using your VPN credentials, or you can use GMail, Google drive, etc.
Since the library is a public space, please screen-lock the computer(s) when leaving the library temporarily but always log off either computer when done.
Do not leave either computer screen-locked when you are done, and log off from any services you may have used, like GMail, Google drive, etc.