PingFederate identifies sessions by their respective PingFederate cookie. You can specify the domain of these cookies.
By default, the PingFederate cookie is set without domain information in the HTTP header.
Set-Cookie: PF=zOv4xxmzDI2rx1TFBFy78X;Path=/;Secure;HttpOnly
You can configure PingFederate to return the Set-Cookie HTTP header with domain information, as needed.
After you activate this change, PingFederate includes domain information in its Set-Cookie HTTP header.
Set-Cookie:
PF=aDfPx6uwbbWGFhwE6zEhEG;Path=/;Domain=.example.com;Secure;HttpOnly