bug sniffer

Today, I suddenly think of this problem: Wireshark can catch the other host's package, because of the shared Ethernet; So now switched Ethernet how to use Wireshark?Read some information on the Internet, organized the following articleSniffer (sniffer) is a commonly used method of collecting useful data, which can be a user's account number and password, which can be some commercially confidential data, etc. Snifffer can be used as a device to capture

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 advanced vswitch, which is not included in the old-

PHP-made port sniffer--you can specify the website and port and return the sniff results. function Http_request ($server, $port) { $data = ""; $query = "head/http/1.0"; $fp = Fsockopen ($server, $port); if ($fp) { Fputs ($FP, $query. " Rnn "); while (!feof ($fp)) { $data. = Fread ($fp, 1000); } Fclose ($FP); } return $data; } ?> if ($action = = "Query") { $data = Http_request ($server, $port); echo "Connected to $server on port $port. ";echo "Outp

parsing.The last three lines of code are specific applications where we use pcapy for data capture.pcap = pcapy.open_live(dev, 1500, 0, 100)Open_live method The first parameter is the device to be opened, the second parameter is the size of the capture packet, whether the third parameter turns on promiscuous mode, the fourth parameter is the delay time to wait for the packet, and the method returns a Pcapy object.pcap.setfilter(filter)Call the SetFilter method to set the filter.pcap.loop(0, han

○ Collation This article was written one year ago and was not completed for some reason. Today, I sorted out shadowstar's home and accidentally found this unfinished article. Although it was a year ago, it is still not out of date and should be helpful to anyone who wants to know sniffer. My father said that everything should start and end. Today is the Dragon Boat Festival. I would like to send a message to my loved ones who are far away from each ot

Sniffer principle: Today, when it comes to hacker attacks, it generally refers to attacks on the system in an active way, such as exploiting vulnerabilities or guessing system passwords. However, there is another type of passive attack that is very harmful, which is often ignored by everyone, that is, the use of sniffer for sniffing attacks.Sniffer, which can be translated into a

As Linux becomes more and more widely used in the network, its security issues are getting more and more attention. This article mainly introduces the working principle and preventive measures of the sniffer technology. What is a sniffer? Sniffer is a device that can capture network packets. Sniffer is a

With the increasing popularity of Internet and e-commerce, the security of the Internet has been paid more and more attention. Sniffer and Forward play an important role in Internet security risks. This article will introduce Sniffer and how to block sniffer. Most hackers only detect and take control of hosts on the Intranet. Only those "ambitious" hackers Instal

Author: Xia zhongyu1. Meanings of sniffer and snifferSniffers (sniffer) has nearly the same history as internet. sniffer is a common method for collecting useful data. The data can be user accounts and passwords, or commercial confidential data. With the increasing popularity of Internet and e-commerce, the security of the Internet has been paid more and more att

BKJIA recommendation: Sniffer security technology from entry to entry Learning the concept and principles of Sniffer is the foundation of Sniffer security technology. How should we get started with the knowledge of Sniffer security technology? Next let's introduce it to you one by one. 1. What is

I don't know if I have ever sent it. I will forward it again. Sniffer is a common method for collecting useful data. The data can be user accounts and passwords, or commercial confidential data. sniffer can be used as a device to capture network packets. ISS defines Sniffer as a tool to intercept data packets destined for other computers using computer network i

Principles of network sniffing tools sniffer wireshark Today, I suddenly think of this question: the reason why wireshark can catch packets from other hosts is shared Ethernet. How can I use wireshark for switched Ethernet? I read some documents online and sorted out the following article. Sniffer is a common method for collecting useful data. The data can be user accounts and passwords, or commercial conf

Network, system management, or security technicians always encounter one or more problems during network management and maintenance. For example, why does the network transmission performance suddenly decrease? Why can't I open the webpage, but QQ can be launched? Why are some hosts suddenly disconnected? Such network problems need to be solved quickly and effectively, so as to minimize the impact of network problems on normal business of enterprises. Therefore, we need a tool to help us quickly

Any tool software has a wealth of features, so in the daily maintenance of internet cafes, for a software, not only to know its surface function, but also to understand its working principle, so as to more effectively mining software more advanced applications and functions, in order to solve the network of difficult problems. The following combined with some of the day-to-day network failure examples, introduce sniffer and network law enforcement off

Sniffer is a technology that uses computer network interfaces to intercept data packets destined for other computers. This technology is widely used in network maintenance and management. It works like a passive sonar, silently receiving various information from the network. Through the analysis of this data, the network administrator can gain an in-depth understanding of the current running status of the network to identify potential problems in the

1. How to Find Sniffer The biggest risk of Sniffer is that it is hard to be found. It is easy to find a Sniffer in a single machine. It can be achieved by viewing all programs currently running on the computer, of course, this is not necessarily reliable. In a UNIX system, run the following command: ps-aux. This command lists all current processes, the users who

Sniffer is a powerful protocol analysis software launched by NAI, it can capture network traffic for detailed analysis, monitor network activities in real time, use expert analysis system to diagnose problems, and collect Network Utilization and errors. Sniffer Pro 4.6 can run on a variety of Windows platforms, as long as it is installed on any machine on the network, you can monitor the entire network. The

The biggest risk of sniffer is that it is hard to be found. It is easy to find a sniffer in a single machine. You can view all the currently running Program Of course, this is not necessarily reliable. From: laky.blog.edu.cn In a UNIX system, run the following command: PS-Aux. This command lists all current processes, the users who start these processes, the CPU usage time, and the memory usage. In t

MySQL Sniffer and mysqlsniffer MySQL Sniffer is a 360 open-source MySQL-based packet capture tool that can capture client requests in real time and format output operation statements.The Operation Review is a good tool for locating problems. Github address: https://github.com/Qihoo360/mysql-sniffer Install # Yum install glib2-devel libpcap-devel libnet-devel# U

/HDLC, ATM, Bluetooth, Token Ring and FDDI (optical fiber) can be acquired in real time;(7) Support to read and analyze the file formats saved by many other network sniffer software, including Tcpdump, Sniffer Pro, Etherpeek, Microsoft Network Monitor and Cisco Secure IDS and other software;(8) Support to capture by various filtering conditions, support by setting display filter to display the specified con