An example for www.freechal.com is as follows:
(When authorization is required, cookies have to be saved.
All the fields of the login html form are to be sent including hidden fields.)

wget --keep-session-cookies --save-cookies cookies.txt --post-data "LOGINURL=http%3A%2F%2Fwww%2Efreechal%2Ecom&OpenMsg=false&Secret=false&ViewHompy=false&OrgRefer=M&NoTBar=&loginLevel=2&otp1=&otp2=&UserID=vievie&Password=ne5cella&SaveID=false" https://ses.freechal.com/signin/verify.asp


After this wget is used as follows:
(Without the single quotation mark, a part of URL after '?' or '&' is not sent properly.)

wget -O 1.html --load-cookies cookies.txt 'http://bbs.freechal.com/ComService/Activity/BBS/CsBBSList.asp?GrpId=987480&ObjSeq=1&PageNo=1'