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2. VPN blocking - Wikipedia

   en.wikipedia.org/wiki/VPN_blocking

   VPN blocking is a technique used to block the encrypted protocol tunneling communications methods used by virtual private network (VPN) systems. Often used by large organizations such as national governments or corporations, it can act as a tool for computer security or Internet censorship by preventing the use of VPNs to bypass network ...

3. Web filtering in schools - Wikipedia

   en.wikipedia.org/wiki/Web_filtering_in_schools

   Web filtering in schools blocks students from inappropriate and distracting content across the web, while allowing sites that are selected by school administrators. [1] Rather than simply blocking off large portions of the Internet, many schools utilize customizable web filtering systems that provide them with greater control over which sites are allowed and which are blocked.

4. 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).

5. IP address blocking - Wikipedia

   en.wikipedia.org/wiki/IP_address_blocking

   Unix-like operating systems commonly implement IP address blocking using a TCP wrapper, configured by host access control files /etc/hosts.deny and /etc/hosts.allow.. Both companies and schools offering remote user access use Linux programs such as DenyHosts or Fail2ban for protection from unauthorized access while allowing permitted remote access.

6. OpenVPN - Wikipedia

   en.wikipedia.org/wiki/OpenVPN

   OpenVPN Community Edition, which is a free and open-source version OpenVPN Access Server (OpenVPN-AS) is based on the Community Edition, but provides additional paid and proprietary features like LDAP integration, SMB server, Web UI management and provides a set of installation and configuration tools that are reported to simplify the rapid ...

7. Internet censorship circumvention - Wikipedia

   en.wikipedia.org/wiki/Internet_censorship...

   free: Turns a computer into a personal, encrypted proxy server capable of retrieving and displaying web pages to users of the server. CGIProxy is the engine used by many other circumvention systems. Flash proxy [46] HTTP proxy: Stanford University: free: Uses ephemeral browser-based proxy relays to connect to the Tor network. Freegate [47] HTTP ...