ports and protocols

Send () methodProperty: ReadyState: A state indicating whether the request was successfulServer snooping and requestsConstruction and testing of the environment1: Download XAMPP Integration Server database and PHP Server Software//self-Baidu download2:dreamwear establish a site and establish a local server selection Php/mysql PHP files need to be placed under the htpdos/folder in the XAMPP installati

Ipx/spx Two network protocols are proposed by NetWare company primarily for LAN and network games where the IPX protocol has the full name of the routing function Internetwork Packet Exchange (Internetwork Packet Exchange), the IPX protocol is the most low-level network protocol with Novell NetWare, which is mainly used to control the addressing and routing of packets between LAN or LAN, only responsible for the transmission of packets in the LAN, do

Simple Network Management Protocol (Snmp:simple Network Management Protocol). The Simple Network Management Protocol is the SNMP protocol that we often refer to as a set of network management protocols defined by the Internet Engineering Task Force (ietf:internet Engineering task Force). The protocol is based on the Simple Gateway Monitoring Protocol (Sgmp:simple Gateway Monitor Protocol). With SNMP, a management workstation can remotely manage all ne

HTTP is only responsible for transmitting the data in the past, not the data is XML, HTML, pictures, text files or anything else. and the SOAP protocol defines how to make an object into XML text, how to call it in a remote way, and how to confuse it.Two kinds of protocols are said:HTTP is the Post Office Protocol, they specify how you want your envelopes to be written, how many stamps to paste, etc...Soap is the agreement between you and the person w

When using X and S locks to lock data objects, some rules need to be agreed, such as when to apply for an X lock or S lock, hold the lock time, and when to release. Called these rules for the blockade agreement (locking Protocol). The different rules governing the blockade form a variety of blockade agreements. Different blocking protocols provide certain guarantee for the correct dispatch of concurrent operation to different extent. 一、一级 Blockade Pr

transaction to be modified at all.Two-stage lock protocolThe database follows the "two-segment lock" protocol when scheduling concurrent transactions, which means that all transactions must lock and unlock data items in two stages Extended stage: Before you read or write any data item, apply and obtain a blockade of the data item. Shrink stage: In each transaction, all blocking requests must precede the unlock request. Mathematically, it can be proved that the scheduling with

, which can effectively prevent network attacks such as ARP spoofing, port scanning, DoS/DDoS, and prevent virus attacks such as shock waves, vibrations, and SQL worms, to maximize the stability and security of HiPER and network. It provides packet filtering based on source/Target IP addresses, protocols, ports, and source/Target MAC addresses, as well as URL-based and keyword-based application layer Filter

Introduction to TCP/IP network protocols Some time ago I made a development, involving network programming, and the development process was quite smooth, but I always felt a bit confused after the task was completed. The main reason is that you are not familiar with network protocols and are not clear about some concepts. Later, I spent some time learning about these network

port 67. This packet can be sent after being constructed. Ethernet is broadcast transmission, and each computer in the same subnetwork receives the packet. Because the recipient's MAC address is a FF-FF-FF-FF-FF-FF, can not see who is sent, so each computer received this package, you must also analyze the IP address of this package, in order to determine whether to send your own mail. When the IP address of the sender is 0.0.0.0 and the receiver is 255.255.255.255, the DHCP server knows that "t

From: http://blog.jobbole.com/74795/ Some time ago I made a development, involving network programming, and the development process was quite smooth, but I always felt a bit confused after the task was completed. The main reason is that you are not familiar with network protocols and are not clear about some concepts. Later, I spent some time learning about these network protocols. Now I have a preliminary

Objective-C Protocols, objective-c Objective-C Protocols 1.1 Formal Protocols A formal protocol (like an informal protocol) is a named list of methods and properties. Formal protocol (like informal protocol) is a list of names of a series of methods and attributes. However, a formal protocol requires that you explicitly adopt it. Formal protocol requires you to e

In Internet protocols, the IP address is useless. Without an effective and correct IP Address Allocation, we cannot make the Internet work. Now let's talk about the relevant issues. For the basic content of the IP Internet protocol, please read from below. Addressing There is a difference between the name, address, and route. The name is what we are looking for. The address indicates where the name is located and how the route solves the problem. IP a

Network basics of basic computer series-network protocols and basic computer networks What's the network protocol A computer with hardware, operating systems, and software already has functions that can be used. However, to realize communication between a computer and a computer, a series of standards must be followed.Internet Protocol. The function of Internet protocol is to define how computers access the Internet and how computers connect to the In

Author: vamei Source: http://www.cnblogs.com/vamei welcome reprint, please also keep this statement. Thank you! Network Layer)It is the most important layer to implement the internet. At the network layer, each LAN is connected to each other based on the IP protocol and eventually forms a global Internet. Higher-level protocols, whether TCP or UDP, must pass through the network layerIP data packet)To transmit information. The operating system als

This article describes the first example: five simple TCP Network service protocols, including Echo (RFC 862), Discard (RFC 863), Chargen (RFC 864), Daytime (RFC 867), Time (RFC 868), and time The client of the Protocol. The functions of each agreement are as follows: * Discard-discard all data received; * Daytime-service-side accept connection, send the current time as a string, and then actively disconnect; * Time-service-side accept connection,

There is no fixed standard for understanding the Wireless Router Protocol. Generally, the standard is IEEE 802.11g. Other content of the wireless router is described in detail later. In our contact, these standards have little impact on us. Wireless Router Protocol Standard Currently, wireless routers support the IEEE 802.11g Wireless Router Protocol and are backward compatible with 802.11b. First, we need to understand the meaning of this standard. IEEE, an international wireless standards orga

The protocol port is always encountered when configuring firewall policies, releasing traffic, and testing services in the workplace. For example, I only allow Telnet traffic to pass, and then I need to know the port number of the Telnte protocol. Network protocol so much, some of the commonly used we may remember, and some are not very common protocol to use the time may be forgotten. To this end, the author for the convenience of themselves and everyone, will be some of the Protocol's port num

Common network protocols in browsers In fact, browsers need to deal with various network protocols to complete various WEB application functions. HTTP is only one of them. This article describes common network protocols in browsers and their relationships. We often hear the term "TCP/IP protocol". Literally, some people think that it refers to both TCP and IP

IPsec is designed to solve some basic security problems of IPv4. To solve these problems, it implements four services: Data Transmission encryption, data integrity verification, data source authentication, and data status integrity. To implement these services, IPsec VPN introduces many protocols. In this article, you will learn how to implement the IPsec security protocol. Fifteen years ago, VPC was a new concept for most enterprises. However, today,

There was no clear concept of open-source protocols before, and I always thought that open-source is free or even free of charge. I spent a day reading open-source protocols a few days ago. Common Open Source protocol analysis Let's have a look at 'open source! Common Open Source protocols Sun shot GPL open source Protocol Open source protocol list I also read so