RFC 9505: A Survey of Worldwide Censorship Techniques
Recent RFCs 2023-11-21
Summary:
This document describes technical mechanisms employed in network
censorship that regimes around the world use for blocking or
impairing Internet traffic. It aims to make designers, implementers,
and users of Internet protocols aware of the properties exploited and
mechanisms used for censoring end-user access to information. This
document makes no suggestions on individual protocol considerations,
and is purely informational, intended as a reference. This document
is a product of the Privacy Enhancement and Assessment Research Group
(PEARG) in the IRTF.