Use Python to write network packet sniffer (Code a networks packet sniffer in Python for Linux) by Silver Moon Basic SnifferSniffers is programs that can capture/sniff/detect network traffic packet by
Among today's many hacking technologies, sniffer is the most common and important technology. Anyone who has used the sniffer tool on windows (for example, netxray and snifferpro) may know that in a shared Lan, using the sniffer tool can provide a clear view of all the traffic in the network! Among today's many hacking technologies,
Article Title: Design and Implementation of Sniffer in Linux environment. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
I. Sniffer
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.
are used:AF_UNIX internal protocolAF_INET Internet ProtocolAF_NS Xerox NS ProtocolAF_IMPLINK IMP connection LayerInt type specifies the socket type. The following values are used:SOCK_STREAM stream socketSOCK_DGRAM datagram socketSOCK_RAW unprocessed socketSOCK_SEQPACKET sequential PACKET socketThe int protocol parameter is usually set to 0.A socket () system call returns an integer called socket description sockfd, which works the same way as a file
[O M personnel? Why? 06] Using sniffer to diagnose Linux network faults? Why? 05] system security inspection tool-nmaphttp: // www.2cto.com/ OS /201304/200744.htmlfu O M personnel are also known as sniffer in network security. [in O M? Why? 06] Using sniffer to diagnose Linux
Ethereal, EtherApe can detect connections between hosts.(I) TcpdumpWhen the network performance drops sharply, you can use Tcpdump to analyze the cause and find out the root cause of network congestion.Tcpdump can intercept packets received by the network card and help the network administrator analyze the contents.It is a basic skill for O M personnel to understand how to use Tcpdump to capture data packets of interest.(1) Tcpdump InstallationGNU/Linux
C Language Implementation Linux Network Sniffer 0x01 experiment IntroductionA network sniffer is a program that intercepts incoming and outgoing data through a network interface. So if you are browsing the Internet, the sniffer catches it in the form of a packet and displays
analyze the cause and find out the root cause of network congestion.
Tcpdump can intercept packets received by the network card and help the network administrator analyze the contents.
It is a basic skill for O M personnel to understand how to use Tcpdump to capture data packets of interest.
(1) Tcpdump Installation
GNU/Linux distributions are installed by default, if not available to: http://www.tcpdump.org download
(2) Tcpdump command line options
-
Interface: 192.168.0.29 on interface 0x1000003
Internet address physical address type
192.168.0.1 00-50-56-40-07-71 dynamic
192.168.0.24 00-50-56-40-07-71 dynamic
The MAC addresses of the two IP addresses are exactly the same! But few will do this :-).
3. Set a packet forwarding rule
[Root @ Linux fragrouter-1.6] #./fragrouter-B1
Fragrouter: Base-1: normal IP Forwarding
Before that, do not forget to enabl
Article Title: sniffer in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
In Linux, the sni
for Pathfinder b
1. Using Arpspoof to implement ARP spoofing attacks on target machines# arpspoof-i Eth0-t 192.168.1.125 192.168.1.1
2. Using Dsniff to obtain data information for the specified port# dsniff-i Eth0-t 21/tcp=ftp,80/tcp=http
The types of protocols supported by Dsniff include:Ftp,telnet,smtp,http,pop,nntp,imap,snmp,ldap,rlogin,rip,ospF,pptp,ms-chap,nfs,vrrp,yp/nis,socks,x11,cvs,irc,aim,icq,napster,ostgresql,meeting Maker,citrix Ica,symantec, Pcanywhere,naI
Article Title: How to enable Sniffer network packets in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Sometimes it's really annoying to forget the FTP login account and pa
The first is the construction of the platform: reference users: http://blog.csdn.net/fengyun1989/article/details/7384899LIBPCAP is the network packet capture function package under the Unix/linux platform,Most network monitoring software is based on it.Libpcap can work on the vast majority of Unix-like platforms.LIBPCAP Application FrameworkLIBPCAP provides a system-independent, user-level network
Hacker common sniffer Analysis in Linux environment-Linux Enterprise Application-Linux server application information. The following is a detailed description. This article analyzes in detail several sniffing devices that hackers often use in Linux, which are often planted o
Network Packet sending tool in linux and network packet sending tool in linuxChapter 2. Description
This document applies only to Tcpreplay3.x.Chapter 2. Tcpreplay tools 2nd. Overview
First, we recommend a Website: movie. This article is based on the reference of this website and obtained through some experiments.
Tcpreplay is a general term for a series of tools
Simple packet capture Analysis in linux and packet capture in linux
Sometimes we may encounter some problems that require packet capture analysis. When there is no professional packet capture tool at hand, we can use tcpdump inste
Linux packet capture analysis (tcpdump) and linux packet capture tcpdumpStart by default
Tcpdump
Under normal circumstances, directly starting tcpdump will monitor all the data packets flowing through the first network interface.
Monitors data packets of a specified network interface
Tcpdump-I eth1
If no Nic is sp
Under Linux, when we need to crawl network packet analysis, we usually use the Tcpdump crawl Network raw packet to a file, and then download it locally using the Wireshark Interface Network analysis tool for network packet analysis.Only recently found that the original Wireshark also provided with the
The title of the article is a bit around the mouth, like the execution of a command pipe, oh, because the server Setup problem can not upload too large compression package, this compression package can not continue to pass the breakpoint, all can only cut, in Windows under the use of software can be easily done, then in Linux how to solve it, It takes only two commands to handle it easily:Let's see the first command:Cat Jordan_shoes.tar.gz|split-b 100
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.