To acces the online resources (databases, journals, etc.) of the Central Library, a VPN (Virtual Private Network) can be used.
If you are an employee of the University, and you have an account in the Groupwise email system, then you can use this, to connect to the VPN service. The description of the service and setup guides can be found on the University's IT department page: http://semmelweis.hu/informatika/egyeb-szolgaltatasok/eroforrasok-tavoli-elerese/
If you are a student of the the University, you can use the VPN service managed by the library. To access it, please check out the Services menu, or click on this link: VPN access for students