  ftp  telnet.
   60000   .
  80  http  
         
    .
Ftp (File Transler Protokol)
  .   .      . -21 ftp 
      help        .     *:)
  .
Telnet.
       cmd telnet ip [     ] [],    23             =)
   23      .
  ( )
7-echo
9-discard
11-systat
13-daytime
17-quote of the day
19-chargen
20-ftp - data
21-ftp control
22-ssh
23-telnet
25-smpt mail transfer
37-timeserver
42-nameserver
43-nicname whois
53-dommainlein name server
69-tftp trival file transfer
70-gopher
79-finger
80-http
88-kerberos
101-hostname nic
107-rtelnet
109-pop2
110-pop3
111-sunrpc
113-identification protocol
117-uucp
119-nntp
123-ntp
135-epmap
137-netbios (name service)
143-imap
   (  * ?!)
   ...     http://www.iana.org/assignments/port-numbers
  .
  vasya-davidov@mail.ru