（1）字节和数字的存储顺序是从右到左，依次是从低位到高位，而网络存储顺序是从左到右，依次从低位到高位。 （2）版本：占第一个字节的高四位。头长度：占第一个字节的低四位。 （3）服务类型：前3位为优先字段权，现在已经被忽略。接着4位用来表示 ...

As with any network and internet-capable computing system, many of Apple's services and programs require access to the internet and/or local network using TCP and UDP ports to function properly. When ...

I'm trying to get a grip on ports. I understand that there are two flavors; UDP and TCP. I also understand that you have a source port and a destination port. This all comes together into what is ...

TCP/IP协议模型（Transmission Control Protocol/Internet Protocol），包含了一系列构成互联网基础的网络协议，是Internet的核心协议 ...

这期主题是TCP/IP协议。 编者按：本文来自36氪战略合作区块链媒体“Odaily星球日报”（公众号ID：o-daily，APP下载） 编者按 ...

TCP/UDP are transport protocols (used at Layer 4, transport) but the session layer (layer 5) handles the connections. The ports have to stay the same so that the lower layers know which application to ...

Microsoft-owned Skype is leaking sensitive user data, including internal and external IP addresses and TCP ports. The issue has been publicly disclosed and I've confirmed that a web-based tool is ...

Anywhere that multiple computing devices share a single Internet connection there is a router. Recently routers from Linksys, Netgear, Cisco and others were found to have a huge security flaw. This is ...

You can connect multiple printers to a single computer in your office and use them to print business documents in various formats. Your computer communicates with each printer on your office network ...