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port basis of common sense Daquan ports can be divided into three broad categori...
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) Dyn
- 2022-03-18 09:29:16下载
- 积分:1
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shell编程的好文章
shell编程的好文章-shell programming excellent article
- 2022-03-24 06:33:23下载
- 积分:1
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编程语言,最基本的元素,和指针,使用和范围…
本章将介绍C++编程语言的最基本的元素,以及C++的指针、引用和作用域。在第3章和第4章,将介绍C++的类和面向对象编程。在你使用微软基础类库(Microsoft Foundation Class Library,MFC)进行Windows编程时,你需要所有这些知识。
C++是一种复杂的语言,它的许多元素非常抽象。它也是一个庞大的语言,为专业编程而设计。本书的重点是使用Visual C++语言来利用MFC编写Windows程序,因此没有深入地讨论C++语言。
MFC是构造于原始C++之上的应用程序框架,它提供了一个Windows应用程序工作的基础,一个可以向内添入自己代码的框架。这个框架提供了绝大多数Windows特征――菜单、工具栏、对话框、控件和滚动条。它也提供使开发者能相对容易的将数据写入文件、打印数据等机制。这个框架的部件是C++的类,这些类表示了应用程序的组件,例如应用程序的主窗口、它的对话框、字符串、如矩形和点的图像对象,甚至应用程序本身。因此,为了使用Visual C++编写Windows程序,你需要知道足够的C++知识来利用MFC。
-C programming language, the most basic elements, and C pointers, use and scope. In Chapter 3 and Chapter 4, will introduce the class C and object-oriented programming. Your use of Microsoft Foundation Class Library (Microsoft Foundation Class Library, MFC) for Windows programming, you need all knowledge. C is a complex language, and many of its elements is very abstract. It is a huge language, as a professional programming and design. The book focuses on the use of language Visual C MFC prepared to use Win
- 2023-09-08 16:30:02下载
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创建拖放时使用的图标
创建拖放时使用的图标-used to create drag and drop the icon
- 2023-03-08 05:05:03下载
- 积分:1
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SONY D70P pin description, and the control protocol description
SONY D70P针脚说明书,和控制协议介绍-SONY D70P pin description, and the control protocol description
- 2023-05-19 14:20:07下载
- 积分:1
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名片管理系统
名片管理系统-management system of business card
- 2022-08-22 12:25:48下载
- 积分:1
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LINUX下的DNS服务器设置
LINUX下的DNS服务器设置-Linux DNS server settings
- 2022-02-05 00:46:14下载
- 积分:1
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RM文件格式的详细介绍,对于流媒体大的编程大有帮助。
RM文件格式的详细介绍,对于流媒体大的编程大有帮助。-RM file format and detailed briefings for the media and flow of programming great help.
- 2022-03-11 07:04:25下载
- 积分:1
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中文java技术网在Java中轻松打印文档
中文java技术网在Java中轻松打印文档-Chinese java technology network in Java easily print a document
- 2023-06-06 01:50:03下载
- 积分:1
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刚刚上载的交通信息查询系统使用说明!刚才忘了上传!站长,这个可以不用计入上载个数了!哈哈!...
刚刚上载的交通信息查询系统使用说明!刚才忘了上传!站长,这个可以不用计入上载个数了!哈哈!-just on the traffic information inquiry system for use! Just forget upload! Chief, this can not included on the Number! Haha!
- 2022-02-05 10:28:52下载
- 积分:1