Networking commands pdf

 

    IP/Networking Commands. There are a lot of IP commands with short descriptions listed here but you should only need the ones mentioned here at the top of the. Windows is jam-packed with networking utilities that can be accessed only at the command line. Many are past relics, but you can feast on. The command line contains a powerful suite of tools that can be utilised in a variety .. The ping command is most commonly used by network administrators to.

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    Networking Commands Pdf

    This tutorial explains basic networking commands (such as tracert, traceroute, ping, arp, netstat, nbstat, NetBIOS, ipconfig, winipcfg and. Let's try and understand networks and look at some troubleshooting techniques to Now enter control in the Run Command box followed by the Return key. techniques may or may not help solve a network problem but is a very good start in At the command prompt, type ping followed by either the host name (e.g.

    This post is also available in: Spanish French. In this article we will go through different network commands for Windows and Linux, this is essential for any network Administrator. These network commands, can be used separately or can be combined with Pandora FMS to monitor in real time, or as part of a long-term strategy. This post along with the network tools one, will serve to better manage your network and your time. If you do not know about Pandora FMS, we invite you to visit our website. With these commands that we will see today, you can create plug-ins in order to facilitate your work, and also suit the tool to your needs. It is one of the most complete network commands. It works on all Linux and BSD systems, and allows us to monitor network traffic from the console.

    With VNStat we can collect all traffic needed from any configured interface. One of the big differences between VNStat and other tools is that VNStat collects kernel data instead of the interface itself, which means a lighter execution for the system. It will not require administrator permissions to run.

    It has the ability to store gathered information so your information never goes missing, even if the system crashes or reboots itself. You can set Vnstat to listen to traffic, daily or by billing period, as well as many other options. It stands out for its flexibility when configuring the reading of traffic.

    Top Networking Interview Questions & Answers

    Finally, it is possible to set Vnstat output to generate console graphics and even customize them with colours. However, it is not as simple as we believe and has many more uses than those we already know.

    It is based on the ICMP protocol and is used to determine: If there is connectivity between your machine and another machine on the network. For this we use the -c parameter.

    The same technique can be used to determine the loss percentage of packages in our network, sending ten packages and seeing if any gets lost.

    The number of packages that usually get lost in the network will surprise you. This network command will tell us where the package is going through machines, switches, routers and check that our network is working properly.

    If you encounter any problems, it will allow us to have a rough idea about where the fault lies. It is a diagnostic tool, and sometimes it can be interesting to monitor it in order to discard ARP Poisoning attacks, which are one of the most common forms of phishing attacks in local networks.

    If it suddenly changes, it is because a host on the network is impersonating another. One of the most common utilities in integration with Pandora FMS, is to verify the contents of a specific web page.

    If it changes, it means that the Web has been altered. Besides this, it allows us to know the following information: Routing tables to meet our network interfaces and its outputs.

    Ethernet statistics that show sent and received packages and possible errors. To know the id of the process that is being used by the connection. Netstat is another basic command as Ping that meets many elementary functions. Some of the elements, that Pandora FMS agents use to get information of the system, are the traffic statistics, the number of open connections and most importantly, the number of closing pending connections or in a settlement process.

    An unusual growth in these metrics can be a serious problem , and it may be due to a performance problem on our server or even an external attack.

    Pandora FMS – The Monitoring Blog

    Its use is highly recommended to contact the administrators of the domains or when incidents of migration of services such as mail and web happen. SSH allows any user to run a console just by registering and entering his credentials.

    So you can run the commands you want as if you were in local. SSH also allows to obtain an interactive remote Shell, execute remote commands and copy files in both directions. Last but not least, SSH is the natural replacement of classic tools like Telnet or FTP, and has become a basic tool in the administration of systems over the years.

    It is extremely powerful despite its complex combinations of symmetric encryption and authentication schemes, and verification, and it is the target of continuous attacks. For security, we need the user to establish an authentication scheme based on certificates, which allows remote execution connections from a machine so that these connections can be made without requiring any password.

    At its simplest, the IPConfig command will display basic IP address configuration information for the device. Simply type IPConfig at the Windows command prompt, and you will be presented with the IP address, subnet mask, and default gateway that the device is currently using. Doing so causes Windows to display IP address configuration that is much more verbose.

    This is also the command that you will have to use if you want to see which DNS server the Windows device is configured to use. From there, you can type host names in an effort to see if the DNS server is able to resolve the specified host name. Route IP networks use routing tables to direct packets from one subnet to another. To do so, simply type Route Print.

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    The cool thing about the Route command is that it not only shows you the routing table, it lets you make changes. Commands such as Route Add, Route Delete, and Route Change allow you to make routing table modifications on an as needed basis.

    Ipconfig Commands & Ping cmd – DOS Network Command List

    The changes that you make can be persistent or nonpersistent, depending on whether you use the -P switch. PathPing Earlier, I talked about the Ping utility and the Tracert utility, and the similarities between them. As you might have guessed, the PathPing tool is a utility that combines the best aspects of Tracert and Ping. Entering the PathPing command followed by a host name initiates what looks like a somewhat standard Tracert process.

    Once this process completes however, the tool takes seconds five minutes to gather statistics, and then reports latency and packet loss statistics that are more detailed than those provided by Ping or Tracert.

    The NetDiag command is designed to run a battery of tests on the computer in order to help the technician figure out why the computer is experiencing networking problems. Entering the NetDiag command by itself will cause all of the available tests to be run. In some cases, NetDiag can not only identify problems, but can also fix those problems. The Windows operating system is jam packed with command line utilities.

    Many of these utilities are left over from operating systems that were introduced decades ago. Even so, the utilities that I have discussed in this article are every bit as useful today as they were when they were first introduced.

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