SMTP

telnet mailserver.home 587
helo telnet1
mail from: <user@mailserver.home>
rcpt to: user@mailserver.home
メール送信
data
本文をここに書く
.

250 2.0.0 Ok: queued as B9D3217FFFFF

HTTP

$ telnet localhost 80
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GET /index.html
<html>
<head><title>404 Not Found</title></head>
<body bgcolor="white">
<center><h1>404 Not Found</h1></center>
<hr><center>nginx</center>
</body>
</html>
Connection closed by foreign host.
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