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2. VPN blocking - Wikipedia

   en.wikipedia.org/wiki/VPN_blocking

   Ports that are used by common VPN tunneling protocols, such as PPTP or L2TP, to establish their connections and transfer data can be closed by system administrators to prevent their use on certain networks. Similarly, a service can prohibit access by blocking access from IP addresses and IP address ranges that are known to belong to VPN providers.

3. Virtual private network - Wikipedia

   en.wikipedia.org/wiki/Virtual_private_network

   Virtual private network (VPN) is a network architecture for virtually extending a private network (i.e. any computer network which is not the public Internet) across one or multiple other networks which are either untrusted (as they are not controlled by the entity aiming to implement the VPN) or need to be isolated (thus making the lower network invisible or not directly usable).

4. List of built-in macOS apps - Wikipedia

   en.wikipedia.org/wiki/List_of_built-in_macOS_apps

   This is a list of built-in apps and system components developed by Apple Inc. for macOS that come bundled by default or are installed through a system update. Many of the default programs found on macOS have counterparts on Apple's other operating systems, most often on iOS and iPadOS.

5. VPN service - Wikipedia

   en.wikipedia.org/wiki/VPN_service

   A VPN service does not make one's Internet use private. Users can still be tracked through tracking cookies and device fingerprinting, even if the user's IP address is hidden. [15] A VPN service can log the user's traffic, although this depends on the VPN provider. [15] A VPN service does not make the user immune to cyberattacks. [15]

6. Mobile virtual private network - Wikipedia

   en.wikipedia.org/wiki/Mobile_virtual_private_network

   A mobile virtual private network (mobile VPN or mVPN) is a VPN which is capable of persisting during sessions across changes in physical connectivity, point of network attachment, and IP address. [1] The "mobile" in the name refers to the fact that the VPN can change points of network attachment, not necessarily that the mVPN client is a mobile ...

7. Proton VPN - Wikipedia

   en.wikipedia.org/wiki/Proton_VPN

   Proton VPN is a VPN service launched in 2017 [9] and operated by the Swiss company Proton AG, the company behind the email service Proton Mail. [10] [11] According to its official website, Proton VPN and Proton Mail share the same management team, offices, and technical resources, and are operated from Proton's headquarters in Plan-les-Ouates, Switzerland. [12]