Please note that the TLS 1.2 update scheduled for Sunday, December 17th is now postponed.
A new go live date will be announced soon. In the meantime, we encourage firms to continue their work to be complaint to support TLS 1.2 protocol. Firms can test the upgrade in New Release and Certification clearing applications.
This advisory supersedes the below notices published on December 11 and August 18th respectively:
17-477: http://www.cmegroup.com/notices/clearing/2017/12/Chadv17-477.pdf
17-320: http://www.cmegroup.com/notices/clearing/2017/08/Chadv17-320.pdf
For the full text of this advisory, please click here.