RFC 8758 · BEST CURRENT PRACTICE · 2020
SUN · 14 JUN 2026
Deprecating RC4 in Secure Shell
Overview
RFC 8758, “Deprecating RC4 in Secure Shell”, is a Best Current Practice document published in April 2020 by L. Velvindron. It updates RFC 4253. The canonical text is published by the RFC Editor.
Abstract
This document deprecates RC4 in Secure Shell (SSH). Therefore, this document formally moves RFC 4345 to Historic status.
What “Best Current Practice” means
Documents the IETF community's recommended operational or procedural practice rather than a protocol specification.
Read this RFC
The canonical text of RFC 8758 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
Relationships to other RFCs
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