: Echo, Time, DayTime, WhoIs, Finger, RLogin, Telnet.
Echo.
- . , . RFC 862.
Echo TCP.
- . - 7. . , .
Echo UDP.
- UDP. - 7 (UDP) .
Time.
. time-, . , - NTP - Network Time Protocol. , (32 ), 00:00:00 1 1900 .
UDP-, TCP-. - 37.
TCP, :
SERVER: 37 ,
CLIENT: 37
SERVER: 32
CLIENT:
SERVER:
CLIENT:
- , , .
UDP, :
SERVER: 37 ,
CLIENT: UDP-, = 37
SERVER: UDP-
SERVER: UDP-, 32
CLIENT: UDP -,
- , UDP- .
