1. UDP protocol to send data and receive dataThe UDP protocol sends the data: • Create a Socket object on the sending side • Create data and package the data • Call the Send method of the socket object to send the packet • Freeing resourcesThe UDP protocol receives data :• Create a Socket object on the receiving end• Create a packet, receive data (Receive
Due to the time relationship, I shared a question left over from the previous topic with you in this topic. This topic mainly introduces how to Implement UDP broadcast.Program, The following describes the implementation process andCodeAnd the running result.
I. Program Implementation
UDP broadcast program implementation code:
Using System; Using System. net; Using System. net. Sockets; Usi
Wireshark Netflow parser Denial of Service Vulnerability (CVE-2014-6424)
Release date:Updated on:
Affected Systems:Wireshark 1.12.0Description:Bugtraq id: 69862CVE (CAN) ID: CVE-2014-6424
Wireshark is the most popular network protocol parser.
Wireshark 1.12.0 has a denial of service vulnerability. Attackers can exploit this vulnerability to crash affected app
Wireshark WCCP Remote Denial of Service VulnerabilityWireshark WCCP Remote Denial of Service Vulnerability
Release date:Updated on:Affected Systems:
Wireshark 1.12.x
Description:
Bugtraq id: 76385Wireshark is the most popular network protocol parser.In Wireshark versions earlier than 1.12.7, a security vulnerability exists in WCCP parser implementation, whi
Wireshark IEEE 802.11 parser Denial of Service Vulnerability (CVE-2016-4078)Wireshark IEEE 802.11 parser Denial of Service Vulnerability (CVE-2016-4078)
Release date:Updated on:Affected Systems:
Wireshark 2.0.x Wireshark 1.12.x
Description:
CVE (CAN) ID: CVE-2016-4078Wireshark is the most popular network protoco
In Linux, common users use wireshark and linuxwireshark.
========================================Allows common users to use wireshark Subcontracting========================================> Create a wireshark GroupSudo groupadd wireshark> Add dumpcap to wireshark GroupSudo
Wireshark-Network packet analysis software
The function of the network packet analysis software is to retrieve the network packet and display the most detailed network packet information as far as possible. Wireshark uses WinPcap as an interface to exchange data messages directly with the network card.
Network administrator uses Wireshark to detect
This article is reproduced to the Http://blog.csdn.net/lixing333/article/details/7782539iosiphone Network filter toolIn another blog post, I introduced a software that is lighter and better used than Wireshark: Charles:http://blog.csdn.net/lixing333/article/details/42776187Today is nothing to do, want to try to analyze the iOS application network data transmission method. I've wanted to do this before, but I haven't been able to get the Internet data
By default, the root permission is required to access the network port, while Wireshark only requires a UI of/usr/share/dumpcap, and/usr/share/dumpcap requires the root permission, therefore, non-root users cannot read the NIC list.
The solution is simple. sudo Wireshark
However, Wireshark does not officially recommend this:
Running as user "root" and group "roo
Wireshark, formerly known as ethereal, is an amazing network monitoring tool. It helps you to capture the data packets being sent/received by your network interface and analyze it.
Warning:Before using Wireshark in promiscuous mode
Make sure that you have the required permissions to do so. promiscuous
Mode, in a way, is packet sniffing and might be able to get rid of
Job you currently have. (In simpler wor
Write a Wireshark plug-in for private protocols
A Wireshark plug-in is written for the company's private protocol. In this way, we can intuitively analyze the captured packages and make development and debugging easier.
First, Wireshark compilation is quite difficult. There are also a lot of errors referring to the net text and the official developer guide of
Wireshark Packet Analysis data EncapsulationData encapsulation refers to the process of encapsulating Protocol data units (PDUs) in a set of protocol headers and tails. In the OSI seven-layer reference model, each layer is primarily responsible for communicating with peers on other machines. The process is implemented in the Protocol Data Unit (PDU), wherein each layer of PDU is generally composed of the protocol header, protocol tail and data encapsu
Wireshark Packet Analysis Data encapsulationData encapsulation refers to the process of encapsulating Protocol data units (PDUs) in a set of protocol headers and tails. In the OSI seven-layer reference model, each layer is primarily responsible for communicating with peers on other machines. The process is implemented in the Protocol Data Unit (PDU), wherein each layer of PDU is generally composed of the protocol header, protocol tail and data encapsu
The application layer protocol must be recognized. Wireshark can be used.
SpecificCodeUsage reference:Wireshark 1.6.5 depends on Winpcap 4.1.2
Wireshark Winpcap differences
Winpcap is a packet capture link layer.Program, Working in parallel with the TCP/IP protocol stack]
Wireshark analyzes data packets and implements multiple protocols and plug-in str
Mac system version: Mac 10.10 YosemiteXcode version: 6.3.1It is necessary to catch a packet when tracking a bug or analyzing an app communication idea from another company. Here's how Wireshark intercepts iphone packets.Installing WiresharkWireshark is dependent on X11, so first confirm the installation of X11,MAC, you can open the upgrade.Go to-utility-x11, open and click X11 on the menu bar to check for updates. Intermediate Extract Package content
Use Wireshark to listen for data on the network under MacIn three steps:1.wireshark InstallationWireshark running on a system that requires a Mac to install X11,mac 10.8 is not X11 by default. First go to http://xquartz.macosforge.org/landing/download the latest Xquartz installation, installation is X11.Wireshark download, there are many download sources online.
The analysis based on Wireshark grasping packetFirst use Wireshark and open the browser, open Baidu (Baidu uses HTTPS encryption), random input keyword browsing.I'm going to filter the bag I caught here. The filter rules are as followsip.addr == 115.239.210.27 ssl
1
Here is a diagram to describe the process of grasping the package as seen above.1. Client HelloOpen the details of the grab bag,
Debugging some of the content of the network, always avoid the need to catch the package, tcpdump is a very suitable tool, this tool can be installed on the server, all the content you need to grasp down, but after the capture it? We also need a tool that can read this package, which is the Wireshark to be introduced.Wireshark is an open source tool, and powerful, easy to use, but under the Mac must have X11 to run, directly installed DMG is not able
To make a long story short, Wireshark has a follow TCP stream feature, which is handy. The drawback is that the extracted stream data does not have time stamps and other information, in the analysis of data delay and packet loss is somewhat inadequate. In this case, a simple follow TCP stream function is implemented with Python, while the TCP information is preserved.The principle is simple and is still based on W
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.