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The day after the block, the total number of posts made in Turkey was up 138%, according to Brandwatch, an internet measurement firm. [ 33 ] After an April 2018 ban on the Telegram messaging app in Iran, web searches for VPN and other circumvention software increased as much as 48x for some search terms, but there was evidence that users were ...
ICMP tunneling can be used to bypass firewalls rules through obfuscation of the actual traffic. Depending on the implementation of the ICMP tunneling software, this type of connection can also be categorized as an encrypted communication channel between two computers.
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.
For example, China, which did and does use jamming extensively, plays a loop of traditional Chinese music while it is jamming channels (cf. Attempted jamming of numbers stations). The purpose of this type of jamming is to block reception of transmitted signals and to cause a nuisance to the receiving operator.
A virtual private network (VPN) service provides a proxy server to help users bypass Internet censorship such as geo-blocking and users who want to protect their communications against data profiling or MitM attacks on hostile networks. A wide variety of entities provide VPN services for several purposes.
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 ...
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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.