network protocol testing

This article we continue through the network analysis expert analysis system to help better solve and deal with the actual problems of the network, through its own powerful analysis system quickly locate the fault, in the first time to solve the problem. One, the more effort to monitor MSN: Perhaps monitoring MSN Chat will violate the privacy of employees, but in the case of a business ban chat through mo

[Network layer] Analysis Network Layer-Internet Control Packet Protocol ICMP (Internet Control Message Protocol) 1) Message format: the ICMP packet is encapsulated into the data part of the IP packet, and the data part of the ICMP packet is the first eight bytes (IP address and port number) of the IP header and data pa

Linux Network Programming 5-use UDP protocol for group chat and network programming udpIntroduction The functions implemented in this article are similar to what I wrote earlier (select System Call _ 2 in Linux). The difference is that the communication methods between processes are different. In the previous article, I used pipelines. In this article, I will use

After queuing the data packet priority, the link layer extracts the data packet to be sent from the header of the queue with the highest priority, and transmits it to the data sending function of the NIC Driver, generally, the name is xxx_hard_xmit (). Because of the different hardware, the writing method varies, and a standard writing method cannot be abstracted, but its process and purpose remain unchanged, the image can be extracted. The general process is as follows: 1. determine whether the

In network security, encryption protocols have always been an important barrier for network security. Therefore, research and learning in this area are also essential for network administrators. Now let's take a look at the consultation on P2P network encryption protocol, ho

The installation of protocol-based (such as Gigabit Ethernet) networks boosts the rapid increase in the use of optical cables in Lan, which can meet the increasing bandwidth and transmission speed requirements. Multi-mode optical fiber cables are especially used for Gigabit Networks) and single-mode optical fiber cables are widely used in buildings as high-speed transmission media. Therefore, in order to get a fast data transmission rate, the LED ligh

) Understanding how the Agreement works Successful TCP IP protocol network fault diagnosis is based on understanding how TCP IP Works and related testing tools. How packets are forwarded by the routing table, tools such as Netdiag.exe can tell you what is critical. If you've never worked hard to understand the Network

For large networks, faults may be difficult to handle, so an effective performance and function testing tool is very convenient. In order to adapt to the current wireless network, the new generation of Wi-Fi wireless protocol analyzer brings new vigor to the network test. The transmission media of WLAN is electromagnet

Reprint please indicate the source:, Thank you!Content SummaryThis section focuses on the basis of network communication, mainly related to the content is:TCP/IP protocol Cluster Fundamentals: two modelsIPV4 Protocol Basics:IP Address Classification and representation, subnet masks, etc.IP address translation: dotted decimal \ binaryTCP/IP

In recent years, the network data business has developed rapidly, the broadband users have exploded, the operators in the use of XDSL,LAN,HFC, wireless and other access methods, in order to build an operational, manageable, profitable broadband network, very concerned about how to effectively complete the user management, PPPoE is one of the many authentication techniques that come along. 1 PPPoE

TCP/IP protocolThe purpose of Internet construction is to share information. In the process of information transmission, the computer inevitably needs to generate communication. Just as we talk to others need to understand each other's language to understand the meaning of each other's expression, the computer communication also needs a constraint, called the protocol. For example, the file transfer uses the TCP p