Skip to main content

RADIUS EXTensions (radext)

WG Name RADIUS EXTensions
Acronym radext
Area Security Area (sec)
State Active
Charter charter-ietf-radext-07 Approved
Document dependencies
Additional resources Additional RADEXT Web Page
Issue tracker, Wiki
Personnel Chairs Margaret Cullen, Valery Smyslov
Area Director Paul Wouters
Mailing list Address
To subscribe
Chat Room address

Charter for Working Group

The RADIUS Extensions Working Group will focus on extensions to the
RADIUS protocol. To ensure backward compatibility with existing RADIUS
implementations, as well as compatibility between RADIUS and Diameter,
all documents produced must specify means of interoperation with legacy
RADIUS. Any non-backwards compatibility changes with existing RADIUS
RFCs, including RFCs 2865-2869, 3162, 3575, 3579, 3580, 4668-4673,4675,
5080, 5090, 5176 and 6158 must be justified. Transport profiles should
be compatible with RFC 3539, with any non-backwards compatibility changes

The WG will review its existing RFCs' document track categories and
where necessary or useful change document tracks, with minor changes in
the documents if needed.

Work Items

The immediate goals of the RADEXT working group are:

  • Deprecating the use of insecure transports outside of secure
    networks. This work updates RFC 6421.

  • Bring RFC 6614 (RADIUS/TLS), and RFC 7360 (RADIUS/DTLS) to
    Standards track.

  • Define best practices for using TLS-PSK with TLS-based transport.

  • Define best practices for RADIUS roaming, and roaming consortia
    based on experience with RADIUS/TLS.

  • Improve operations for multi-hop RADIUS networks: e.g. loop detection
    and prevention, a multi-hop Status-Server equivalent with ability to
    Trace the proxy steps a RADIUS message will follow.

  • Extend the 8-bit RADIUS ID space to allow more than 256 "in flight"
    packets across one connection.

  • Allow for CoA / Disconnect packets to be sent in "reverse" down a
    RADIUS/TLS or RADIUS/DTLS connection. This functionality assists with
    transit of NATs.

  • Defining Application-Layer Protocol Negotiation (ALPN) extensions for RADIUS/TLS and RADIUS/TLS
    which allow the use of those transports in a FIPS-140 compliant environment.


Much of this work should be completed by 2024 in order to be part of
the Wi-Fi 8 release, with products in 2026.


Date Milestone Associated documents
May 2024 Extend 8-bit ID Space to IESG
May 2024 multi-hop status / traceroute, extend 8-bit ID space draft-cullen-radextra-status-realm
Jan 2024 Deprecating Insecure Uses of RADIUS to IESG draft-ietf-radext-deprecating-radius
Jan 2024 6614bis and 7360bis to IESG draft-ietf-radext-radiusdtls-bis
Aug 2023 reverse change of authorization (CoA)" path support for RADIUS draft-ietf-radext-reverse-coa

Done milestones

Date Milestone Associated documents
Done TLS-PSK Best Practices draft-ietf-radext-tls-psk
Done ALPN negotiation draft-ietf-radext-radiusv11