


    

 :
                    ..      ..                      ..

  Telnet        ..
Telnet                   Port        ()    (Daemon)             .
    :       ()   ()     ()     ..       (Telnet)            (Daemon)   ..          ..       ( )   ( )  .

    Telnet    ( ) ..                 .             Daemon       .

 Telnet  FTP Client
           FileTransfer Protocol    21 ..

   
      Telnet  FTP Client       FTP !!
               ..

 
1 -   Telnet    ftp.zdnet.com  21
    

Sources Code - 

220 l19-sj-zdnet.zdnet.com NcFTPd Server (licensed copy) ready.



    Banner   FTP Daemon    zdnet          .              .
2 -        Username    Password ..   zdnet   Anonymous      :


Sources Code - 


user anonymous



   

Sources Code - 


331 Guest login ok, send your complete e-mail address as password.



   

Sources Code - 


pass @zorro



     Anonymous          ..               (    @)
   

Sources Code - 


230-You are user #552 of 2000 simultaneous users allowed.
230-
230 Logged in anonymously.



         ..        ..
        .

            (     ) ..        !!                  .
      
 :        ()  IP             .
                   ..       .
 :         PASV

Sources Code - 


PASV



    IP      (  )    ()   ..


Sources Code - 


227 Entering Passive Mode (207,189,69,61,12,41)



        ..
   ( )   IP        207,189,69,61 ..          
12  256 + 41 = 3113

                 3113 ..          Telnet     ftp.zdnet.com  3113 ..
                 ..

   LIST (   )   

Sources Code - 


LIST



      

Sources Code - 

125 Data connection already open; Transfer starting.



                   .

                      PASV ..            .

       ..             (  ) .

 
-    ..             CuteFTP !!                       
-             
-         
http://www.vbip.com/winsock/winsock_ftp_01.asp 
(  )
http://www.vbip.com/winsock/winsock_ftp_ref_01.htm (  )
http://www.cis.ohio-state.edu/htbin/rfc/rfc0959.html (    )

    

Zorro-TmH


 