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一、端口 网上冲浪、聊天、发电子邮件,必须要有共同的协议,这个协议就是TCP/IP协议,任何网络软件的通讯都基于TCP/IP协议。如果把互联网比作公路网,电脑就是路边的房屋,房屋要有门你才可以进出。TCP/IP协议规定:电脑可以有256乘以256扇门,即从0到65535号“门”,TCP/IP协议把它们叫作“端口”。当你发电子邮件的时候,E-mail软件把信件送到了邮件服务器的25号端口;当你收信的时候,E-mail软件是从邮件服务器的110号端口这扇门进去取信的;你现在看到的我写的东西,是进入服务器的80端口。新安装好的个人电脑打开
First, the port Web surfing, chatting, e-mail, you must have a common agreement, this agreement is TCP / IP protocol, any network software communication are based on TCP / IP protocol. If the Internet is likened to a road network, the computer is a roadside house, and houses need a door before you can go in and out. The TCP / IP protocol states that a computer can have 256 times 256 gates, from 0 to 65535 gates, which the TCP / IP protocol calls “ports.” When you send an e-mail, the E-mail software sends the mail to port 25 of the mail server. When you receive the mail, the E-mail software fetch the mail from port 110 of the mail server. You Now I see what I wrote, is entering the server port 80. The newly installed personal computer is turned on