If you’re doing research off-campus and need to connect to Trinity’s network of resources, such as library databases (ProQuest, LexisNexis, JStor, etc.) or site-licensed applications (ArcGIS, etc.), or shared hard drives (zep, docex, etc.), then you need to set up a free Virtual Private Network account. VPN allows students, staff, and faculty to log in off-campus computers to the Trinity network (with your username and password), enabling you to access the password-protected resources above. I use it frequently when working from home. See Trinity ITS instructions to install VPN for Windows and MacOS.
When I install the free VPN tool on my Mac, the top bar of the Finder looks like this: