linux trace network traffic

Cause, in the company Server Providing external services is also a very important service. However, as the company's employees also need to occupy a large amount of traffic, the server may not be able to grab the bandwidth, seriously affecting the external services of the server, therefore, we need to restrict the Internet bandwidth of our employees to ensure that the server provides external service bandwidth.

In Windows, we can use the ipconfig command to obtain information about the NIC. in Linux, the command is ifconfig. The information we can obtain is richer, including the traffic received and sent by the network card. It is not easy to use the C language to implement this command. As a result, the blogger consulted the relevant information, we know that the NIC i

Compared with nload, Iptraf is an excellent free small software that monitors network traffic of specific ports in linux. system environment: centos6.3Iptraf: iptraf-3.0.0 2. View dependency packages: # rpm-qa | grepgcc # rpm-qa | grepglibc # rpm-qa | gre Compared with nload, Iptraf is an excellent free small software that monitors

} Similarly, the "Outgoing traffic on interface {# SNMPVALUE}" in the "Project prototype" is modified similarly. That is, replace ifInOctets and ifOutOctets with ifHCInOctets and ifHCOutOctets. Then delete the host and re-Add the host. This time, everything is refreshed. The painted images are continuous and there is no sharp increase or decrease. SNMP configuration for Zabbix SNMP for dynamic network analy

Https://www.ibm.com/developerworks/cn/linux/l-ipc/part4/ from Introduction:The traffic signal is not the same as that of other processes. It mainly provides resource access control for inter-process sharing. It is equivalent to a memory flag. A process can determine whether it can access some shared resources. At the same time, the process can modify the flag. In addition to access control, it can also be

[Share] The Real-time memory database eXtremeDB is successfully applied to the F5 network company LAN traffic management system-Linux Enterprise Application-Linux server application information. The following is a detailed description. The famous network equipment industry l

Inter-process communication in a Linux environment: traffic signals-general Linux technology-Linux programming and kernel information. For more information, see the following section. I. Traffic Signal Overview The traffic signal

There are many open-source network monitoring tools available on the web for Linux operating systems. For example:You can use the command iftop to check bandwidth usage, netstat to view interface statistics reports, and other tools BANDWIDTHD, speedometer, nethogs, Darkstat, Jnettop, Ifstat, Iptraf, Nload and ntop and so on.But these tools are statistical card access data, if you want to find a like 360 sec

Use shell script to compute the Linux NIC traffic, the most critical point in the method: Copy Code code as follows: Ifconfig $eth _name | grep bytes | awk ' {print $} ' | Awk-f: ' {print $} ' The flow of input and output is obtained by Ifconfig eth0|grep bytes. Copy Code code as follows: /@rac2 =>dd2$ifconfig Eth0|grep bytes RX bytes:1638005313300 (1.4 TiB) TX

The nload Nic traffic display tool has a single function, but is clear at a glance and easy to use. I personally recommend it. the installation process of the linuxnload tool is as follows: 1. The nload Nic traffic display tool has a single function, but is clear at a glance and easy to use. I personally recommend it. the installation process of the linux nload

Default Linux templates do not have a trigger for the NIC, click on the graph in monitoringSelect a host, graphics select network traffic on eth0650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M02/7F/8D/wKioL1civ77iEyX5AAEcYj89x9E918.png "title=" 1.png " alt= "Wkiol1civ77ieyx5aaecyj89x9e918.png"/>If you need to alarm t