Looking for logging into the Http Header Password site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Http Header Password site. After that you can login as usual with your login credentials.
https://en.wikipedia.org/wiki/Basic_access_authentication
https://de.wikipedia.org/wiki/HTTP-Authentifizierung
https://developer.mozilla.org/en-US/docs/Web/HTTP/Authentication
https://stackoverflow.com/questions/18264601/how-to-send-a-correct-authorization-header-for-basic-authentication
https://www.httpwatch.com/httpgallery/authentication/
https://www.blitter.se/utils/basic-authentication-header-generator/
https://www.ibm.com/support/knowledgecenter/en/SSGMCP_5.1.0/com.ibm.cics.ts.internet.doc/topics/dfhtl2a.html
https://serverfault.com/questions/371907/can-you-pass-user-pass-for-http-basic-authentication-in-url-parameters
https://serverfault.com/questions/371907/can-you-pass-user-pass-for-http-basic-authentication-in-url-parameters/541206
https://docs.oracle.com/cd/E24191_01/common/tutorials/authn_http_basic.html
https://blog.risingstack.com/web-authentication-methods-explained/
http://qnimate.com/understanding-http-authentication-in-depth/
https://octoperf.com/blog/2018/04/24/jmeter-basic-authentication/