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2. Ultrasurf - Wikipedia

   en.wikipedia.org/wiki/Ultrasurf

   UltraSurf is a closed-source freeware Internet censorship circumvention product [2] created by UltraReach Internet Corporation. The software bypasses Internet censorship and firewalls using an HTTP proxy server , and employs encryption protocols for privacy.

3. Great Firewall - Wikipedia

   en.wikipedia.org/wiki/Great_Firewall

   For example, shortly after a VPN request is issued by a legitimate Chinese VPN client and passes outbound though the Great Firewall to a hidden VPN IP, the Great Firewall may detect the activity and issue its own active probe to verify the nature of the previously unknown VPN IP and, if the probe confirms the IP is part of a blacklisted VPN ...

4. Stuck behind a VPN wall? Let’s find a way around it - AOL

   www.aol.com/stuck-behind-vpn-wall-let-130033637.html

   A virtual private network (VPN) allows computer and smartphone users to mask an IP and create a secure, encrypted connection between a device and the internet.

5. 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 ...

6. 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).

7. Fix problems with AOL websites due to ad blocking software

   help.aol.com/articles/fix-problems-with-aol...

   Unblock yahoo.com in any antivirus software, which may have built-in ad blocker; Disable ad blocker on the home Internet router. Refer to the manufacturer's instruction manual; Check all the icons in the browser navigation bar for a possible ad blocker, and disable/remove them