Authorization tells which resources, or host devices, are authorized to be accessed (such as FTP servers). https://www.ciscopress.com/articles/article.asp?p=422947&seqNum=2#:~:text=Authorization%20tells%20which%20resources%2C%20or%20host%20devices%2C%20are%20authorized%20to%20be%20accessed%20(such%20as%20FTP%20servers).