linux sniff network traffic

appliances are also typically instantiated using the Net_device struct (there are some exceptions, such as Alias Interface Devices). The virtual appliance typically has a user space configuration tool to configure it. In particular, advanced fields that cannot be configured by using Ifconfig. a virtual appliance typically has a/proc interface directory, and its content verbosity depends on the design of the virtual appliance. The virtual device corresponds to a corresponding relationship that i

different. Or the way it is illustrated:1.bridge modeThis bridge is only for the Macvlan Nic that belongs to a host Ethernet card and the communication behavior between the host NIC, regardless of the external communication. The so-called Bridge refers to the network between these cards, the data flow can be directly forwarded, do not need external assistance, which is somewhat similar to the Linux box bui

the most time-consuming pages (more than 60 seconds) and the number of corresponding page occurrencesCat Access.log |awk ' ($NF > $7~/\.php/) {print $7} ' |sort-n|uniq-c|sort-nr|head-1007. List files that have been transmitted for longer than 30 secondsCat Access.log |awk ' ($NF >) {print $7} ' |sort-n|uniq-c|sort-nr|head-208. Statistics website Traffic (G)Cat Access.log |awk ' {sum+=$10} END {print sum/1024/1024/1024} '9. Statistics 404 of the Conn

Tags: background service 17. Statistical information Work HTML nstat-o about interactive18 Common commands for monitoring network bandwidth on a Linux serverThis article describes some of the Linux command-line tools that you can use to monitor network usage. These tools can monitor data transmitted over a

I. Introduction to the ConceptNetwork programs are divided into server-side programs and client programs. The service side is the one that provides the service, and the client is the party requesting the service. But the reality is that some programs of the client, server-side role is not so obvious, that is, mutual client and service side. When we write a network program, it is generally based on TCP protocol or UDP protocol for

billing object is an IP address, which is prone to IP address theft to avoid billing, some schools use vswitches with strong functions to bind the ports of vswitches to IP addresses, although this method can restrict IP theft to some extent (it cannot be completely eliminated, in Linux, you only need ifconfig to modify the MAC. In windows, you need to modify the key value in the registry, this allows users to access the Internet only on the bound com

network cards that belong to a single host Ethernet card are the same, Because the host Ethernet card is not using the MAC address to divert traffic from the Ipvlan virtual network card at all. The specific process is as follows:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/6C/F0/wKioL1VYMMvAWkwbAAOyO_EK5Tw383.jpg "title=" Ipvlan.jpg "alt=" Wkiol1vy

FORWARD DROP [Root @ linux-tys root] # iptables-a output-j ACCEPT-o lo-these two actions allow internal network traffic on the send-back Interface [Root @ linux-tys root] # iptables-a input-j ACCEPT-I lo [Root @ linux-tys root] # iptables-a output-j ACCEPT-o eth1-p tcp-m st

First, let's take a look at the diagram of a major multi-queue network card (E1000) with multi-core CPUs: Non-multiple queues: The Linux network card is represented by the structure body Net_device, one of which corresponds to a dispatch packet sending queue. The entity of the packet is Sk_buff (SKB) in the kernel, in the form of: Multiple queues: A

㈠ Download and installPreparation Environment: Yum-y Install Libpcap-devel ncurses-devel wget http://sourceforge.net/projects/nethogs/files/nethogs/0.8/nethogs-0.8.0.tar.gz/downloadtar xvzf nethogs-0.8.0.tar.gzCD NethogsMake make install㈡ Effectdifferent from other statistics and monitoring network card traffic, nethogs a bit special, can monitor each process of net bandwidth usage㈢ UseThe program requires

This is a creation in Article, where the information may have evolved or changed. The research on the container network has been interrupted for some time due to the reasons for the exchange of work in 2016. With the current project to kubernetes application in depth, I feel that before the shallow understanding of the container network is not enough, the container netw