iRule for html form / cookie auth for NTLM?

Is it possible to have an iRule that will create an NTLM authorization header?

 

 

I currently have a custom HTML form that sets a cookie (base64 username/password - lightly salted). The iRule takes that and set the Authorization header.

 

 

I'd love to be able to set an NTLM Authorization header instead - removing the need for Basic Authentication..

 

 

Is anyone using an iRule to create an SSO / html form experience for NTLM?

 

 

Thanks!