How to set HTTP header in portalLogon.jsp

Hi everyone!

We implemented customized portal logon app, using this guide Customizing Logon Page on Portal 7.3

No we want to implement NTLM authorisation, for this purpose I need to set HTTP header

I am trying to do it with such code in logonPage.jsp:

response.setHeader("WWW-Authenticate", "NTLM");

But server returns no WWW-Authenticate HTTP header to client, I guess becouse we have

some wrapper classe instead of HttpServletRequest and HttpServletResponse in our portal logon app.

This wrapper class erase any http header that I try to set I guess for security reasons.

So the question is how to configure portal logon app (or maybe some other portal environment)

to accept headers that we set at portal logon page jsp.

Thanks in advance!