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.
Please find below the FIXS Draft Standard documentation. This comprises of the FIXS specification and a guide for Stunnel users. The Stunnel guide is intended to allow anyone to get started with FIXS, whilst the FIXS specification is applicable to all TLS implementations.
Please click here to view the FIXS Stunnel User Guide for FIX Applications.