(this page copied from http://www.dstc.qut.edu.au/MSU/research_news/web_sec/KRB_PROT.HTM)
GET /restricted/adam.html HTTP/1.0 Accept: */* User-Agent: NCSA Mosaic for the X Window System/2.4 libwww/2.12 modified
HTTP/1.0 401 Unauthorized Date: Friday, 03-Feb-95 18:45:13 GMT Server: NCSA/1.3 MIME-version: 1.0 Content-type: text/html WWW-Authenticate: KerberosV4
GET /restricted/adam.html HTTP/1.0 Accept: */* User-Agent: NCSA Mosaic for the X Window System/2.4 libwww/2.12 modified Authorization: KerberosV4 acain 0406004e4353412e554955 32e454455003820c3e4fc931b68ed20d0f696ee74148a696eb4 a4d83e1c80af9ce02e5d3f230dc5e63bbc8595ce95ea6de42b18 d957063ceb45787ab479999565d353da2b5b17a76a89e0d169 3694ee91e5623b953a5dfd3be00642596ff846
timestamp+1
to authenticate server
HTTP/1.0 200 OK Date: Friday, 03-Feb-95 18:45:16 GMT Server: NCSA/1.3 MIME-version: 1.0 Content-type: text/html Last-modified: Wednesday, 04-Jan-95 22:58:20 GMT Content-length: 624 WWW-Authenticate: KerberosV4 [c3602905a92b683f] User authenticatedHTML Document here