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一文详解TCP/IP协议 - 21ic电子网
SMTP (Simple Mail Transfer Protocol,简单邮件传输协议) ,用来发送电子邮件 。 TELNET (Teletype over the Network, 网络电传),通过一个终端 (terminal)登陆到网络。 SSH (Secure Shell,用于替代安全性差的TELNET),用于加密安全登陆用。 运行在UDP协议上的协议: ...
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