A Survey of Worldwide Censorship Techniques
RFC 9505, “A Survey of Worldwide Censorship Techniques”, is an Informational document published in November 2023 by J. L. Hall, M. D. Aaron, A. Andersdotter, B. Jones, N. Feamster, M. Knodel. The canonical text is published by the RFC Editor.
Abstract
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.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 9505 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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