FIX-over-TLS (FIXS)
FIX-over-TLS (FIXS) is the standard to secure FIX sessions using the Transport Layer Security (TLS) protocol. The use of FIXS is considered a requirement as it introduces a basic level of security and standard options for interoperability.
Discussion on Cybersecurity and FIXS can be found in our forums under General Q&A using the tag cybersecurity.
More information on the work from the FIXS Working Group can be found here.
Version 1.1 Release Candidate 1
FIXS - Technical Proposal - v1.1 RC1 392.92 KB 438 downloads February 22, 2021
Technical Proposal FIXS Version 1.1 Release Candidate 1– published February 22nd, 2021 ...
FIXS - Technical Specification v1.1 RC1 455.82 KB 365 downloads February 22, 2021
FIXS Version 1.1 Release Candidate 1 – Technical Specification published February 22nd, 2021 ...Version 1.0 Standard
FIXS Technical Specification – Technical Standard 668.95 KB 275 downloads February 19, 2021
2/19/2021 - FINAL Standard FIX-over-TLS (FIXS) v1.0 ...Version 1.0 Draft Standard
Please find below the FIXS Draft Standard documentation.
FIXS Technical Specification - v1.0 Draft Standard 200.84 KB 1249 downloads January 6, 2018
1/5/2018 - Draft Standard v1.0 ...Version 1.0 Release Candidate 1
FIXS Technical Standard - v1.0 RC1 252.09 KB 1300 downloads August 18, 2017
FIX-over-TLS (FIXS) Technical Standard - FIXS is the standard to secure the Transport Layer Security (TLS) protocol. ...FIXS Stunnel User Guide for FIX Applications
Please click here to view the technical guidelines for FIXS Stunnel. The Stunnel guide is intended to allow anyone to get started with FIXS, whilst the FIXS specification is applicable to all TLS implementations.