port sniffer

Source: ChinaITLabAccording to the Sniffer implementation principle in the switching environment (For details, refer to the Sniffer implementation in the switching environment), I wrote an Arp Sniffer implementation similar to the ArpSpoof implementation in the Linux environment.　　In Windows, Sniffer must meet the foll

I. Preparations before capturing data packetsBy default, sniffer will capture all data packets flowing through the access collision domain. However, in some scenarios, some data packets may not be what we need. To quickly locate network problems, it is necessary to filter the data packets to be captured. Sniffer defines the filtering rules before capturing data packets. The filtering rules include the defin

Open source database traffic audit MySQL SnifferMy most respected database security product is a traffic-based database audit, because it does not need to change the network structure, and the most critical is that it does not affect the performance of the database server, do not have to earnestly persuade the database administrator to install monitoring software. It can be better to find the drag library behavior through the Web vulnerability, as well as the database management process based on

Nmap Concept NMap, also known as Network Mapper, is the first web scan and sniffer toolkit under Linux. Nmap is a network-side scanning software used to scan Internet computers open Network connections. Determine which services are running on which connections, and infer which operating system the computer is running (this is also known as fingerprinting). It is one of the required software for network administrators and is used to evaluate network sy

After installing the sublime Text3 under the Mac, some plugins have been installed, including PHP code sniffer, which is referred to as phpcs. Used to prompt for PHP syntax errors. After installation, cannot display, I according to the official website prompt, installs the phpcs need some plug-ins, including: PHP-CS-FIXER,PHPCBF,PHPMD. And the Phpcs file is still not prompt. Attach configuration file: \ Start Here { Plugin settings//Turn The debug

Preface: The port of the flashsky modified by phantom Mix used to reuse the sniffing serv-u. After testing, it cannot be used on the win2003 server. I don't know the specifics, but I don't know whether the operations are correct, I have never succeeded. I constructed an environment and tried it. The sniffer program was written by myself. I used raw for sniffing. If I wanted arp, I had to install the winca

Recently, users often receive phone complaints, indicating that the connection is restricted and the IP address cannot be obtained at all. The Gateway Switch cannot be pinged, and the indicator is in normal status. After the vswitch is restarted, the client can access the Internet, but it is still refreshing soon! It seriously affects the normal use of the enterprise network and may cause economic losses. According to the situation described by the user and the experience we have processed many

Using sniffer experts to analyze routing loops in the Network Sniffer expert analysis system is one of the intelligent analysis systems provided by sniffer, he can intelligently analyze the data streams in the network to provide Intelligent Analysis of all objects in the network from the data link layer to the application layer, and through this intelligent analy

(INT iprotocol){For (INT I = 0; I If (protomap [I]. protonum = iprotocol)Return protomap [I]. prototext;Return "";}// TCP unpacking programInt decodetcppack (char * tcpbuf){Tcp_header * ptcpheader;Int I;Ptcpheader = (tcp_header *) tcpbuf;Printf ("port: % d-> % d", ntohs (ptcpheader-> th_sport), ntohs (ptcpheader-> th_dport ));Unsigned char flagmask = 1;For (I = 0; I {If (ptcpheader-> th_flag) flagmask) printf ("% C", tcpflag [I]);Else printf ("-");F

A Bluetooth Sniffer From: http://www.tigoe.net/pcomp/code/archives/000311.shtml Bluetooth SnifferIn this example, a lantronix wiport serial-to-Ethernet device was connected to an initiium promi SD-102 blutooth serial dongle. no firmware code or microprocessor was needed, since the promi device communicates serially to the wiport, And the Java program below communicates to the wiport via TCP. The code below opens a socket to the wiport, then sends at-s

This article introduces a simple network Sniffer implemented by using C language and network data packet analysis and development tools. Currently, many Sniff tools are available, such as Netxray and Sniffer pro in Windows. It is very convenient to capture packets in Windows. It is common in UNIX environments such as Sniffit, Snoop, Tcpdump, and Dsniff. This section describes a simple network