network sniffer hardware

network is a small frame (frame) of the transmission of the frames are composed of several parts, different parts to perform different functions. (for example, the first 12 bytes of Ethernet hold the source and destination addresses, which tell the network: where and where the data is coming from.) Other parts of the Ethernet frame hold the actual user data, the TCP/IP header, or the IPX message prime).Fra

From -- http://blog.csdn.net/zhangnn5/article/details/6810347 Reading this articleArticleBefore that, I suppose you already know the TCP/IP protocol, ARP protocol, What Is sniffer, and other basic network knowledge.In a General Lan, there are usually two access methods, one is hub access (The Hub here refers to the general hub ), one is direct access from a vswitch (the vswitch here is a relatively advanc

and the damage of network equipment. You can use the Host List feature in sniffer to see which machines in the network have the most traffic, and combine the matrix to see which machine data flow is abnormal. Thus, we can judge the specific fault points of the network in the shortest time. 2,

small Frame unit on the network. frames are composed of several parts, and different parts perform different functions. (For example, the first 12 bytes of Ethernet are the Source and Destination addresses, which tell the network the source and destination of the data. Other parts of the Ethernet frame store the actual user data, TCP/IP packet header, or IPX packet header ). The frame is formed by a specif

). Therefore, Sniffer is often used for "special" purposes. Sniffer application The Sniffer tool has many different functions and designs. Some can only analyze one protocol, while others may be able to analyze several hundred protocols. Generally, most sniffing devices can analyze at least the following protocols: standard Ethernet, TCP/IP, IPX, and DECNet, ofte

check the alarm log to see if the network is running normally. Iv. Application of Sniffer in network maintenance-solving network transmission quality problems Sniffer's Application in Internet cafes mainly uses its traffic analysis and viewing functions to solve network tr

Use ARP to detect hybrid nodes in the Network Author: refdomEmail: refdom@263.netHomepage: www.opengram.com Due to the harm of Sniffer, it is also important to check whether there is sniffer in the network. Anti-sniff is generated accordingly to detect the networkSniffer In. There are many ways to detect

software. This article uses its powerful traffic Graphic System Host Table to monitor network traffic in real time. In terms of monitoring software, we chose the sniffer pro, which is commonly used by NAI companies. In fact, many Internet cafe administrators have experience in monitoring the network: when there is a network