Note: This was originally posted by an inactive account. Content was preserved by moving under an admin account.
Originally posted by: mgajdosikHi,
this question is a bit more complex, it varies accross website how the authentification is handled. I would use some browser plugin like "Live HTTP headers" which is there for chrome and firefox. You can watch what data is sent and how it sent during authentification process. Then you can mimic this behaviour in HTTP node.
As mentioned this is very generic question, and to be able to answer your question, more knowledge would be required on website details.
Regards
Marek