network traffic analyzer linux

source and destination hosts and processes MAC: Local communication: Range: Local LAN any Internet traffic must be switched to local IP: Define communication host, source and target, range: Internet Port: Define the process; scope; host Network configuration: The Linux host is involved in the network, and

shows the application and the process number, so you can find the process number by this command when you want to kill a process. the command parameters for Nethogs are as follows:Options-h Display available commands usage.-V Prints Version info.-D delay for refresh rate.-V Select view mode-P sniff in promiscious mode (not recommended).-T TraceMode.-C Limit number of refreshes-s sort by traffic sentThere are fewer commands to display the page, only a

At It's FOSS we are not talking about the "command line aspect" of Linux every day. Basically, I'm more focused on the desktop side of Linux. But some of your readers in-house surveys (It's FOSS newsletter subscribers only) point out that you also want to learn some command-line tricks. The Quick check table is also popular with most readers.To do this, I edited a list of basic

Linux device driversLinux device drivers exist as kernel modules for Linux in Linux. Kernel modules can dynamically scale the system while the system is running. So, we can dynamically install or unload modules in user space, using Insmod and Rmmod.There are a lot of devices in the real world, which vary in electrical characteristics and I/O methods. To simplify

protocol in Linux. The structure is obvious: source Port, dest destination port, len udp length, and check is the verification code. Icmphdr this is the IP protocol's icmp protocol header Struct icmphdr{U_int8_t type;U_int8_t code;U_int16_t checksum;Union{Struct{U_int16_t id;U_int16_t sequence;} Echo;U_int32_t gateway;Struct{U_int16_t_unused;U_int16_t mtu;} Frag;} Un;}; This is the icmp protocol in linux's IP protocol. The main parameters here are th

This series of articles written by muge0913, reproduced please note the Source: http://blog.csdn.net/muge0913/article/details/7339915 When talking about Linux, we can't help but mention network technology. Linux is a product of a Network. It can be freely downloaded, modified, and improved on the

Original link: http://www.ibm.com/developerworks/cn/linux/l-hisock.htmlUsing the Sockets API, we can develop client and server applications that can communicate on the local network or on a global scale over the Internet. As with other APIs, you can use the Sockets API in a number of ways to improve the performance of the socket or to limit the performance of the socket. This article explores 4 ways to use

This 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 network interface and measure the speed at which data is being transmitted. The inbound traffic is displayed separately from the outbound traffic.Some commands can show

interface will affect the security and stability of the server to some extent, therefore, This is not a detailed introduction to this approach here. ） ifconfigThe command temporarily configures the IP address (temporarily configuring the IP address, i.e. the configuration will expire when we restart the computer or restart the network service) setupThe tool permanently configures the IP address (the tool setup is Red Hat developed so that und

Recently, we need to use a network simulator to set the speed, packet loss, and latency in the network. in FreeBSD OS, you can use dummynet + ipfw for settings. but in Linux, what software is used for simulation? There are two options:1. nistnet: a very powerful tool with few documents.2. netem: simple and practical. It can "gives you to delay, reordering, lo

/tcp_max_syn_backlog The maximum number that can be saved in the queue for connection requests that have not yet been confirmed by the other. If the server is overloaded frequently, try increasing this number. 2048 2048 /proc/sys/net/ipv4/tcp_low_latency This option should be disabled if the TCP/IP stack is allowed to accommodate low latency under high throughput conditions. 0 /proc/sys/net/ipv4/tcp_westwood Enables the sender-side

/usr/local/libexec/qemu-bridge-helper, usually without customization, with default values. Sndbuf=nbytes limits the send buffer size of the tap device to n bytes, which can be set when traffic is required for traffic control. The default value is "Sndbuf=0", which does not limit the size of the send buffer. Here again the following command launches the virtual machine: /usr/libexec/qemu-kvm-m 8096-cpu qe

1. Overview As one of the five functions of network management, charge management can detect and control the cost and cost of network operation, record the usage of network resources, and after the cernet has determined the principle of paid use of network resources and share the international communication cost, the

How to monitor network usage through nload in Linux Nload is a free software tool for linux. It provides two simple graphics to help linux users and System Administrators monitor network traffic and bandwidth usage in real time. O

need to tell yourself what to do in a packet, and you should suggest how to do it.The main algorithms for detecting and controlling data traffic through windows are:RttTo determine whether congestion, not only through the window to detect congestion, but also through the direct measurement of round-trip time. Window detection is observed, and round trip time belongs to the measurement. The first congestion control algorithm Vegas is monitored and con

[O M engineer _ 06] uses sniffer to diagnose Linux network faults[O M engineer _ 05] System Security Inspection tool-nmapHttp://www.bkjia.com/ OS /201304/200744.htmlO M personnel, good or false, such as sniffer)Sniffer is a double-edged sword in the field of network security. It can be used as a network attack tool

Many windows are familiar with the ipconfig command-line tool, which is used to obtain and modify network interface configuration information. The Linux system has a similar tool, the ifconfig (Interfaces config). You typically need to log in as root or use sudo to use the Ifconfig tool on a Linux machine. Depending on the options properties used in the Ifconfig

service configuration 1. Configure and use mysql Install, configure, and manage mysql, and back up and restore data. 2. Configure and use apache Install apache, use apache configuration files to manage web servers, set virtual hosts, and configure PHP interpreters and management tools. (4) Linux Server Security Management 1. Firewall Learn about IP packet filtering. Use the firewall supported by the kernel and use iptable for firewall configur

Article title: Linux Network Administrator Manual (3 ). 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. Chapter 3 Configure network hard