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In fact, once you are done doing library research, even if you still are performing one of the other tasks for which a VPN connection is necessary (see the overview for a list), it may be worthwhile to disconnect from the VPN and then re-connect using the General Access method. Also, if you are no longer going to be doing any of the things that require a VPN, disconnecting altogether will make your general web browsing go faster.
Changing Your Access Method
To select your access type, open the VPN and click "Connect." This will launch the DUO sign in page, as well as a second box that allows you to select your access method. Note: the DUO sign in page will hide the access method selection box:
Click on the access method box to switch between General Access and Library/International:
After you select your access method, complete the DUO sign in process.