how to view network traffic

　　[It168]As we all know, at the beginning of the Internet, colleges and research institutions communicate with each other, and there is no consideration or design for network traffic control. The principle of IP protocol is to serve all data streams as well as possible, different data streams are equal. However, many years of practice show that this principle is not the most ideal, and some data streams sho

Copy Code code as follows: #!/bin/bash While ["1"] Todo Eth=$1 rxpre=$ (Cat/proc/net/dev | grep $eth | tr: "" | awk ' {print $} ') txpre=$ (Cat/proc/net/dev | grep $eth | tr: "" | awk ' {print $} ') Sleep 1 rxnext=$ (Cat/proc/net/dev | grep $eth | tr: "" | awk ' {print $} ') txnext=$ (Cat/proc/net/dev | grep $eth | tr: "" | awk ' {print $} ') Clear Echo-e "\ t RX ' date +%k:%m:%s ' TX" rx=$ ((${rxnext}-${rxpre})) tx=$ ((${txnext}-${txpre})) if [[$RX-lt 1024]];then rx= "${RX}B/

Throughput is an indicator of the network traffic that can be processed by network devices per second. In reality, network administrators often use the term "traffic" to measure the performance of devices, what is the relationship between 1-to-1 and 1-to-2? It has plagued ma

Article title: using TC to control network traffic in Linux. Linux is a technology channel of the IT lab in China. Some basic categories including desktop applications, Linux system management, kernel research, embedded systems, and open source are well known. at the beginning of the Internet, colleges and research institutions communicate with each other, there is no consideration or design for

How to prevent network attacks through traffic control Sailor_forever sailing_9806 # 163.com (This original article is published on sailor_forever's personal blog and cannot be used for commercial purposes without my permission. No individual, media, or other websites may copy files without permission. For online media reprinting, please indicate the source and add the original text link. Otherwise, this is

Tool 1 SAR The SAR command is included in the sysstat toolkit and provides numerous statistics about the system. Its commands vary in different systems. Here we only talk about its network data monitoring parameters. Sar-N [Dev | EDEV | sock] interval CNT The SAR provided by some systems supports statistics based on network interfaces. This command can view the n

can be written into the configuration file with one option per line ), then, start the service in the form of "ntop @ Configuration File. The following are common ntop Program Options: Option name Description -C/-- sticky-hosts Record of inactive hosts -P/-- db-file-path Specify new data storage records -U/-- user Identity of the user who runs the program -B/-- disable-decoders Disable protocol Decoder -N/-- numeric-ip-address

--> 　　核心提示：-->With the development of the IP network to the multi-service network, especially the development of VoIP in recent years, it is inevitable to transmit signaling messages in the IP network. But in the IP network cannot provide high-quality transmission services like mtp3 and ATM, so the ITU-T proposed an im

Urban Hotspot University Campus network user and traffic management scheme includes dr.com Campus network broadband authentication billing solution and dr.com Network protocol analysis and flow control system. According to network complexity and application complexity requir

30.2 network traffic optimization 1 At present, users are basically downloading the app through the network and updating the app version, reduce the size of the app, you can effectively reduce user consumption of network traffic. 2 at present, the league has supported the i

Using Iptraf in Linux for network traffic analysis Iptraf is an excellent free software that monitors network traffic in linux, especially installed on the firewall, and works with Iptables, the network that monitors the flow through the firewall is abnormal, and the effect

How does a router limit the speed of a LAN, how does the LAN allocate network bandwidth, and Control LAN traffic? The following two methods can be used to limit the network speed of a computer and prevent the network speed of a LAN:1. Methods of limiting others' network spee

Nethogs is a small, free open source command-line tool used to count network bandwidth usage in real time by process or program.For use similar to "repo tool", "Depot_tools" and other tools checkout source code is very useful, you can view the current download speed information, so you do not blindly wait.Installation under Ubuntu system sudo apt-get install Nethogs How to use Nethogs

This article describes in detail how to set up wireless networks to reduce network traffic? This article will give you a detailed explanation. How can we reduce the cost of network traffic while ensuring the network speed? This is an urgent problem for many enterprises, espe

Network Traffic Monitoring ntopng NtopngOutlineI. IntroductionIi. FunctionsIii. InstallationIv. ConfigurationV. Test I. Introduction 1. ntopng is the next-generation ntop version. It monitors and displays network traffic in real time. Ntop is based on Libpcap and it is written in a portable way to run on UNIX platforms

Reference:Http://blog.163.com/[email protected]/blog/static/28596246201092081139283/I. Acquisition and installation of IftopCentos:yum Install IftopUbuntu:sudo Apt-get Install IftopCompile and install:Iftop is also a member of the Free Army, as follows:Click to download IftopIftop needs to rely on two packages, Libpcap and tcpdump respectively, to install the two guys before installing iftop.Click to download Libpcap and tcpdumpDon't rush to download and install Libpcap and tcpdump, if the syste

Introduces a powerful analysis of the network shell script, this script is split from the ezhttp, feel the need to introduce separately. Screenshot of script run effect: This script contains features such as: 1, real-time monitoring of any network card traffic2, statistics in 10 seconds average flow3, statistics of each port in 10 seconds of the average flow, based on client and server-side port stat

System version[Email protected] libexec]# cat/etc/redhat-releaseCentOS Release 5.6 (Final)1 Installing and configuring SNMP1) Yum install net-snmp-utils Net-snmp net-snmp-libs-y2) vi/etc/snmp/snmpd.confRemove the # numbers from the next two lines#view mib2 included. Iso.org.dod.internet.mgmt.mib-2 FC#view all included. 1 80Put the following statementAccess Notconfiggroup "" Any noauth exact systemview none

Background knowledgeOften for large data center networks (Networks, or DCN), each server is used very differently, and the average usage is almost nonexistent, and most of the situation is that 70% of usage and traffic requirements are concentrated on a small subset of servers, This is also the problem of building a cloud computing hub through a LAN network.Is the hotspot used by data center servers in most cases:Can be seen, in fact, most of the reso

Article title: use Iptraf in Linux to analyze network traffic. 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. Iptraf is an excellent free software for monitoring network traffic in