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[WEB Code] RFC792_cn DL : 0: Internet控制信息协议（ICMP）（RFC792 INTERNET CONTROL MESSAGE PROTOCOL）-Internet control message protocol (ICMP) (RFC792 MESSAGE CONTROL INTERNET PROTOCOL)
Date : 2008-10-13 Size : 4.35kb User : 李进
[WEB Code] ICMP DL : 0: 使用Visual Studio C++ 6.0和网络接口套接字Socket进行Windows环境下的网络编程，运用原始嵌套字RAW_SOCKET从IP层开始构造整个ICMP报文，通过ICMP协议所提供的回送请求(echo request)和回送应答(echo reply)这两种报文实现检测目的站的可达性与状态
Date : 2008-10-13 Size : 22.73kb User : 陈颖
[WEB Code] 端口可分为3大类 DL : 0: 端口基础常识大全端口可分为3大类： 1）公认端口（Well Known Ports）：从0到1023，它们紧密绑定于一些服务。通常这些端口的通讯明确表明了某种服务的协议。例如：80端口实际上总是HTTP通讯。 2）注册端口（Registered Ports）：从1024到49151。它们松散地绑定于一些服务。也就是说有许多服务绑定于这些端口，这些端口同样用于许多其它目的。例如：许多系统处理动态端口从1024左右开始。 3）动态和/或私有端口（Dynamic and/or Private Ports）：从49152到65535。理论上，不应为服务分配这些端口。实际上，机器通常从1024起分配动态端口。但也有例外：SUN的RPC端口从32768开始。本节讲述通常TCP/UDP端口扫描在防火墙记录中的信息。记住：并不存在所谓ICMP端口。如果你对解读ICMP数据感兴趣，请参看本文的其它部分。-port basis of common sense Daquan ports can be divided into three broad categories : a) recognized ports (Well Known Ports) : 0-1023, which closely bundled with some of these services. These ports are usually clear communication of a service agreement. For example : 80-port virtually always HTTP communications. 2) Registered port (Registered Ports) : from 1,024 to 49,151. They loosely bundled with some of these services. That is to say there are many services bundled with these ports for the same used for many other purposes. For example : Many systems dynamic port from around 1024. 3) Dynamic and / or private ports (Dynamic and / or Private Ports) : from 49,152 to 65,535. Theoretically, should not be allocated to these ports. In fact, the machines are usually from 1024 onwards dynamic por
Date : 2008-10-13 Size : 7.94kb User : 何问宇
[WEB Code] Ohsce-master DL : 0: 一款高可靠性跨平台的PHP通信框架，对Windows友好且同时支持Linux和OS X。对TCP、UDP、ICMP、RS232/485通信，可轻松驾驭各种以太网应用和工业总线应用。OHSCE科学的平衡了高性能和高可靠性，天生分布式支持，特别适合应用于对可靠性和稳定性有较高要求的场景。如：物联网、工业与自动化工程、智能化工程、可靠网络服务。-A highly reliable cross platform PHP communication framework for Windows friendly and supports both Linux and OS X. TCP, UDP, ICMP, RS232/485 communication, can easily control a variety of Ethernet Applications and industrial bus applications. OHSCE scientific balance of high performance and high reliability, natural distributed support, particularly suitable for reliability and stability of the high requirements of the scene. Such as: Internet of things, industrial and automation engineering, intelligent engineering, reliable network services.
Date : 2025-12-28 Size : 1.39mb User : zhangxiaoqiang