BIG-IP as IDP for Service-now instance

Thasin,

Something is probably misconfigured on the BIG-IP. Looks like you might be getting a RST from the BIG-IP - which could indicate many things - perhaps it does not recognize the SP and cannot automatically bind it to the right IDP config... I suggest you turn up SSO debug logs and look in /var/log/apm - it should give you an idea what's going on after you get that RST.