计算机端口详细介绍
在上网的时候，我们常常会看到“端口”这个词，也会常常用到端口号，比方在FTP地址后边增加的“21”，21就表示端口号。那么端口到底是什么意思呢?怎样检测端口号呢?一个端口是否变成网络恶意攻击的大门呢?，我们应当如何面临形形色色的端口呢?下面就将介绍这方面的内容,以供我们参考。21端口:21端口首要用于FTP(FileTransferProtocol，文件传输协议)服务。端口说明:21端口首要用于FTP(FileTransferProtocol，文件传输协议)服务，FTP服务首要是为了在两台计算机之间实现文件的上传与下载，一台计算机作为FTP客户端，另一台计算机作为FTP服务器，能够选用匿名(anonymous)登录和授权用户名与密码登录两种方法登录FTP服务器。Windows中能够通过Internet信息服务(IIS)来提供FTP连接和管理，也能够独自安装FTP服务器软件来实现FTP功能，比方常见的FTPServ-U。操作建议:因为有的FTP服务器能够通过匿名登录，所以常常会被黑k使用。别的，21端口还会被一些木马使用，比方BladeRunner、FTPTrojan、DolyTrojan、WebEx等等。假如不架设FTP服务器，建议关闭21端口。23端口:23端口首要用于Telnet(远程登录)服务，是Internet上遍及选用的登录和仿真程序。(When surfing the Internet, we often see the word "port" and often use the port number. For example, "21" is added after the FTP address, and 21 represents the port number. So what does the port mean? How to detect the port number? Does a port become the door to malicious network attacks? How should we face all kinds of ports? The following will introduce the content of this aspect for our reference. Port 21: Port 21 is mainly used for FTP (FileTransferProtocol, file transfer protocol) services. Port description: Port 21 is mainly used for FTP (FileTransferProtocol, file transfer protocol) service. FTP service is mainly for uploading and downloading files between two computers. One computer is used as an FTP client, and the other computer is used as FTP. The server can log in to the FTP server using two methods: anonymous login and authorized user name and password login. In Windows, FTP connection and management can be provided through Internet Information Services (IIS), and FTP server software can also be installed independently to realize FTP function, such as the common FTPServ-U. Operation suggestion: Because some FTP servers can log in anonymously, they are often used by hackers. In addition, port 21 is also used by some Trojans, such as BladeRunner, FTPTrojan, DolyTrojan, WebEx, etc. If you do not set up an FTP server, it is recommended to close port 21. Port 23: Port 23 is mainly used for Telnet (remote login) services, which are widely used login and emulation programs on the Internet.)
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