I am learning about network security on my home network and noticed my FTP port was open. When I open up a web browser or ftp client it show that I am connected but no files or directories show up. Why? I also opened up a command prompt (I run win2k) and ftped my pc and once again connection but nothing shows up. Am I voulnerable to attacks? Obviously my directories dont show up but can some one put a backdoor on my system like this? And if someone did upload to this connection where would I find the files?