he characteristics of TCP protocol TCP (which means Transmission Control Protocol) is one of the main protocols of the transport layer of the TCP/IP model. It makes it possible, at application level, to manage data coming from (or going to) the lower…

在计算机网络OSI模型中,TCP端口完成第四层传输层所指定的功能.我们的电脑与网络连接的许多应用都是通过TCP端口实现的.本文与大家分享部分TCP端口的介绍. 21端口:21端口主要用于FTP(File Transfer Protocol,文件传输协议)服务. 23端口:23端口主要用于Telnet(远程登录)服务,是Internet上普遍采用的登录和仿真程序. 25端口:25端口为SMTP(Simple Mail Transfer Protocol,简单邮件传输协议)服务器所开放,主要用于发送…

最近准备系统学习网络相关的知识,主要学习tcp/ip, websocket 知识. 原文地址:http://www.thegeekstuff.com/2011/11/tcp-ip-fundamentals/ Have you ever wondered how your computer talks to other computers on your local LAN or to other systems on the internet? Understanding the intrica…

We know that Web services use the TCP protocol at the transport layer. Standard TCP protocol to three-way handshake (three-way handshaking), the server can respond to the client's request to send data. If the three-way handshake phase, the client can…

转载于:http://www.itxuexiwang.com/a/liunxjishu/2016/0225/167.html?1456482565 如下图展示的是TCP的三个阶段.1,TCP三次握手. 2,TCP数据传输. 3,TCP的四次挥手. SYN:(同步序列编号,Synchronize Sequence Numbers)该标志仅在三次握手建立的时候有效.表示一个新的TCP连接请求. ACK:(确认编号,Acknowledgement Number)是对TCP请求的确认标志,同事提示对端系…

TCP, relative to the SOCKET developers create process and link remove process consists of the TCP/IP protocol stack is automatically created. So the developer doesn't need to control this process. But to understand TCP the underlying mechanism is qui…

简单介绍 TCP协议要经过三次握手才干建立连接: (from wiki) 于是出现了对于握手过程进行的攻击.攻击者发送大量的SYN包,server回应(SYN+ACK)包,可是攻击者不回应ACK包,这种话,server不知道(SYN+ACK)是否发送成功,默认情况下会重试5次(tcp_syn_retries).这种话.对于server的内存.带宽都有非常大的消耗.攻击者假设处于公网.能够伪造IP的话,对于server就非常难依据IP来推断攻击者,给防护带来非常大的困难. 攻与防 攻击者角度 从攻…

WCF - net.pipe vs. net.tcp vs. http Bindings 问题: I'm new to WCF and would like to know the differences/advantages/limitations/etc of each of the following bindings: net.pipe net.tcp http Supporting scenarios on when to use each binding and other exam…

This is a reference of IP networking parameters that are configurable as described in our linux tweaking article -here-. /proc/sys/net/ipv4/* Variables: ip_forward - BOOLEAN 0 - disabled (default) not 0 - enabled Forward Packets between interfaces. T…

[root@localhost tt]# man listen LISTEN() Linux Programmer’s Manual LISTEN() NAME listen - listen for connections on a socket SYNOPSIS #include <sys/socket.h> int listen(int sockfd, int backlog); DESCRIPTION To accept connections, a socket ), a willi…