network management protocols

20.1. webbrowser -convenient Web-browser Controller 20.2. cgi -common Gateway Interface Support 20.3. cgitb -traceback Manager for CGI scripts 20.4. wsgiref -wsgi Utilities and Reference implementation 20.5. urllib -open arbitrary resources by URL 20.6. urllib2 -extensible Library for opening URLs 20.7. httplib -http Protocol Client 20.8. ftplib -FTP Protocol Client 20.9. poplib -POP3 Protocol Client 20.10. imaplib -IMAP4 Protocol Client 20.11. nntplib -NNTP Protocol Client

Description of some network protocols DICT: a dictionary server protocol. Dict servers and clients use TCP port 2628 FILE: Mainly used to access files on local computers, just like opening a file in Windows Explorer. FTP: (File Transfer Protocol, FTP) is the Protocol for transferring files from two computers on the TCP/IP network. FTP is one of the earliest

In the communication field, we are still using the inherent GPRS communication method. The network protocol for it includes the UDP protocol and the TCP protocol. Now let's talk about the selection and requirements of the following two protocols based on the GPRS network bearer capability. Now let's take a look at the following article. ◆

There are a variety of Internet protocols. Today we will mainly introduce the ConnectionLess Network Protocol (CLNP. CLNP (ConnectionLess Network Protocol) is an ISO Network layer datagram Protocol that works at the Network layer of the Open System Interconnection Reference

Basic overviewThe primary function of the transport layer is to provide end-to-end communication to applications on two hosts, identifying the correspondence between the corresponding programs on the two hosts via the port number. The most important two protocols in the transport layer are TCP and UDP, which can be used to identify the protocol type that transmits the data based on the Protocol field of the IP header. TCP is a connection-oriented, rel

We have been dealing with computers all day, learning from the outside world through the Internet, and getting rich learning materials from the Internet. We can also exchange information with others through computers, in fact, all these actions are information interactions between multiple computers. Do we know how the information is transmitted? How can we make the data on one computer accurate to the other? Next, let's learn about the network protoc

The win10 system prompts that the computer lacks one or more network protocols. In the Win10 system, a browser cannot connect to the network. After the diagnosis, the system prompts "one or more network protocols are missing for this computer ". The following steps are perf

similar to the concept of the network information table in Digital Video broadcast Digital Video Broadcasting, DVB. RSVP uses this request to access each node of the network through the network. On each node, RSVP tries to reserve resources for the stream. This makes it possible to provide images with quality of service and other real-time services. What is an I

For the network, we usually use the access network. How are protocols defined? Next, let's take a look at the relevant content of the access network protocol. Because the layer-3 tunnel Protocol relies heavily on the characteristics of the PPP protocol, it is necessary to discuss the PPP protocol in depth. The PPP acce

addition, the widespread use of IPsec will make the work of the Information Security Department more difficult, because they can no longer use the firewall for encrypted traffic, the firewall is invalid ). As for Layer 2 secure Ethernet, we all know that there are many ARP problems in IPv4, among which it can maliciously redirect traffic. IPv6 also has a very similar problem, but the name has changed: NDPNeighbor Discovery Protocol) poisoning, rather than ARP poisoning. The same mitigation tech

Chapter 4 and chapter 5 of network protocols _ ARP RARPNetwork Protocol Chapter 3 _ IP Internet ProtocolHttp://www.bkjia.com/net/201305/209591.htmlIntroductionWhen a host sends an Ethernet data frame to another host on the same LAN, the destination interface is determined based on the 48-bit ethernet address. The device driver never checks the IP address in the IP datagram.ARP provides dynamic ing between I

We have introduced some types of access network protocols. In our general concept, the access network is also a feature of Wired Access. Familiar with PPP protocols. Because the layer-3 tunnel Protocol relies heavily on the characteristics of the PPP protocol, therefore, it is necessary to conduct an in-depth discussio

" three books to choose, combined with their own understanding of these times, through the GNS3 to build the relevant network environment to carry out the relevant agreement analysis, I believe this will definitely be a very good experience!When I was writing these posts, I was in the reality of my personal device, The operating system environment used (including the operating system environment of the virtual machine) is mostly Ubuntu15.10, while tak

Two types of transport protocols: TCP,UDPTCPTCP is the short name of Transfer Control Protocol , which is a connection-oriented protocol that guarantees reliable transmission .In the TCP/IP protocol,IP layer is mainly responsible for the location of the network host, the routing of data transmission, by the IP address can uniquely determine a host on the Internet　　 . 　　The TCP layer provides an application-

A network protocol is a collection of standards, rules, and norms that a computer uses to Exchange data over a network. Common protocols are TCP protocol, IP Protocol, UDP protocol, ICMP protocol. These are all transport protocols, as well as application layer protocols such

Network is a tool that everyone can't do without. It is becoming more and more active. How much do you know about these computer network protocols? Understanding the use of these protocols can help us use computer networks more rationally. Now, we will introduce several commonly used computer

The use of IPv6 network protocols is no longer a new thing. However, as an excellent improved version, it does have shortcomings, which is why it has not been popularized for so many years. Next we will analyze his advantages and defects, and then give a brief introduction to his installation. In Windows Server 2003, Windows XP Service Pack1, and Windows XP Service Pack 2, Microsoft has bound Internet Proto

The two PPP authentication protocols (PAP and CHAP) for vroppp setting networking have just completed a test of Dual-router plug-in to the serial port module today, it is used to gain a deeper understanding of the differences between the two PPP authentication protocols PAP and CHAP. 1. First, build a network environment. There are two routers in total, plug in t

Server Leasing--- Common network protocols: The difference between TCP and UDP and TCP and UDP difference TCP--- Transmission Control Protocol , which provides a connection-oriented, reliable byte-stream service. Before customers and servers Exchange data with each other, they must first establish a a TCP Connection before the data can be transferred. TCP provides time-out re-send, discard duplicate data

The VoIP network protocol is the basis of the network telephone. It has been widely used in network communication. The use of this Protocol forms this business and challenges the traditional communication market to the maximum extent, and traditional communication methods. Let's take a look at this powerful VoIP. VoIP network