一台服务器能提供的服务有很多，比如HTTP、FTP、Telnet等服务。为什么可以同时提供那么多服务呢?有一个很重要的原因是采用不同的端口分别提供不同的服务，比如:TCPIP协议规定web默认80端口，FTP默认21端口等。通过不同端口，计算机可以与外界进行互不干扰的通信。

很多用户都知道80端口和443端口，但是并不了解这两个端口，80端口和443端口有什么区别?那今天驰网科技千安就来介绍一下它们之间有什么区别。

HTTPS：443端口

　　服务项目：https

　　网页浏览端口，能提供加密和通过安全端口传输的另一种HTTP，简单来说，就是HTTP安全版，打开的网页中，如果网址前缀为https，则说明该网站开启了https安全访问。

　　说明：443端口用于网页浏览，关闭电脑443端口，将会导致https网页无法正常打开。

HTTP：80端口

　　服务：http

　　说明：用于网页浏览，关闭电脑80端口，将会导致无法打开网页。

　　HTTPS安全超文本传输协议，它是一个安全通信通道，它基于HTTP开发，用于在客户计算机和服务器之间交换信息。https和http最大区别在于前者通过安全加密，更安全。

HTTP和HTTPS的区别

1、HTTP是超文本传输协议，信息是明文传输，HTTPS是具有安全性的SSL加密传输协议。

2、HTTP和HTTPS使用的是完全不同的连接方式，用的端口也不一样。前者是80，后者是443。

3、HTTPS 协议需要到ca申请证书，一般免费证书很少，需要交费。

4、HTTP的连接很简单，是无状态的 HTTPS协议是由SSL+HTTP协议构建的可进行加密传输、身份认证的网络协议 要比HTTP协议安全。

驰网科技镇江机房ip：

43.248.100.1

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