1. get base url and save its cookies in file 2. get protected content using stored cookies

   1.$ wget --cookies=on --keep-session-cookies
   --save-cookies=cookie.txt http://first_page

   2.$ wget --referer=http://first_page --cookies=on
   --load-cookies=cookie.txt --keep-session-cookies
   --save-cookies=cookie.txt http://second_page

   Source: Dzone