I found this interesting forum post on the msft forums. This code will help you change all your sites to require secure key exchange.
here's the post: http://forums.microsoft.com/TechNet/ShowPost.aspx?PostID=2796017&SiteID=17
Microsoft Operations Manager—MOM
Microsoft System Center Capacity Planner—SCCP
Microsoft System Center Configuration Manager—ConfigMgr
Microsoft System Center Data Protection Manager—SCDPM
Microsoft System Center Essentials—SCE
Microsoft System Center Operations Manager—OpsMgr
Microsoft System Center Reporting Manager—SCRM
Microsoft System Center Virtual Machine Manager—SCVMM
Microsoft Systems Management Server—SMS
