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Consumer-grade internet routers can sometimes obtain a new public IP address on-demand from the ISP using DHCP lease renewal to circumvent individual IP address blocks. This, however, can be countered by blocking the range of IP addresses from which the internet service provider is assigning new IP addresses, which is usually a shared IP ...
Domain Name System blocking, or DNS blocking / filtering, is a strategy for making it difficult for users to locate specific domains or websites on the Internet. It was first introduced in 1997 as a means to block spam email from known malicious IP addresses .
Announcements of new assignments are often published on network operators' mailing lists (such as NANOG) to ensure that bogon filtering can be removed for addresses that have become legitimate. For example, addresses in 49.0.0.0 / 8 were not allocated prior to August 2010, but are now used by APNIC .
Screenshot of a website blocking the creation of content which matches a regular expression term on its blacklist. In computing, a blacklist, disallowlist, blocklist, or denylist is a basic access control mechanism that allows through all elements (email addresses, users, passwords, URLs, IP addresses, domain names, file hashes, etc.), except those explicitly mentioned.
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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Psiphon is a centrally managed and geographically diverse network of thousands of proxy servers, using a performance-oriented, single- and multi-hop routing architecture. [ 1 ] Psiphon is specifically designed to support users in countries considered to be "enemies of the Internet". [ 2 ]