Advice 1: How to know local port

Each network program, the operating system allocates the local portthrough which the and communicates. Sometimes you need to know on what portfrom working the program or what application a particular port.
How to know local port
Instruction
1
Information on the use of the portof am may be necessary in the case of suspected infection by computer Trojans. On it, in particular, may indicate features such as increased traffic or network activity of the computer at the time, when you do not use the Internet.
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If you suspect infection of your computer first check which local portyou opened on it. To do this, open a command prompt: "start" - "All programs" - "Accessories" - "Command prompt". Enter in the terminal window the command netstat – aon, it will show all current connections.
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In the first column of the list indicates the type of connection. In the second local address and the used port. The column "Foreign address" shows the address which connects your computer. In the column "Status" you can view the status of the connection – whether it exists in the moment - ESTABLISHED, over – TIME_WITE or program listens to the port, that is ready for communication – LISTENING. Finally, the PID column shows the process ID is a numeric code through which you can easily understand what the process is "hanging" on a particular port.
4
Type in the same window, the tasklist command, you will see a list of running processes. In the second column, just behind the names of the processes indicated by their identifiers. For example, you see on the first list that you open a local port 3564. Then look in the last column (PID) and find the process ID – for example, 3388 (data are different). Now go to the second table, the second column the PID 3388 and to the left of it you see the name of the opened this port of the program.
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To get more information about addresses that connects to your computer, use the appropriate network services. For example, this: http://www.ip-ping.ru/whois/ Enter in the desired ip address, click "Request" and you will get all available data.

Advice 2 : How to check which ports are open

Sometimes the user who wants to maximize control of your system, it is essential to clarify what the port's connections are open at the moment with his PC. This operation takes no more than a few seconds.
How to check which ports are open
Instruction
1
First of all, you can use the netstat command from the standard set of Windows XP. To log in to the Windows command prompt and there type "netstat 5" (without the quotes). After the execution of the command, you will see updates every 5 seconds (you can specify any other time) a report containing information about open connections, programs, and use their ports.
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Some may be easier to use the program TCPView or other software of similar purpose. In addition, the same information you may report any firewall running on your computer.

Advice 3 : How to see which ports are open

Can happen such situation that the traffic on your Internet can start "suddenly" somewhere "to go." In this case, attention should be given to ports of the computer to see where which application and which uses the - and to fix the situation based on position information.
How to see which ports are open
Instruction
1
There is such a situation that he does not want in any to run an application that uses a network for its operation - in this case, it is also worth checking if the port is open, which the program uses for its work. In General, situations when you need to find out the list of open ports are common. In order to see the list, you must use either third-party port scanners or standard utility for Linux and Windows: netstat. It runs from the command line. So open a command prompt. This can be done in two ways: 1. "Start" > "Run...". In the window that appears, enter "cmd" and press "Enter"; 2. To run the command line "manually", i.e. go to folder "C:\WINDOWS\System32" and run the program from there "cmd.exe".
2
Now you need to run the utility "netstat". To do this, type at the command line, which was launched in the first step, "netstat" and press "Enter".
For those who this little information, can explore the possibilities of this tool, run it with –h, that is, type in command prompt "netstat -h". The most probable and common keys to run: "netstat-b" - in this case the utility will display not only the open ports, but the apps that use these ports for its operation. "netstat 5". In the case of such starting information about the open ports will be displayed in increments of five seconds, the information will be updated every five seconds, and to stop the output of data with a given key, use the key combination "Ctrl+C".
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Examine the information. In the command prompt window will display the open ports. It will look the following way: the command line will be divided into four parts, and in the left column will indicate the name of the Protocol in the second domain and after the colon is an open port, the third external address and the fourth state.

Advice 4 : How to know the pid of the process

When the computer starts a process, it gets a pid that is the ID of the process. Sometimes you need to know the ID. Maybe you for some reason need to disable a running process, for example, if it interferes with the removal. There are several ways to know the pid. The simplest way to do this using task Manager and command prompt.
How to know the pid of the process
You will need
  • - a computer running Windows (XP, Windows 7).
Instruction
1
Press ctrl+alt+del. If your operating system is Windows XP, the task Manager will appear immediately, if Windows 7 - a window will appear where you can select it.
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In task Manager select the Processes tab. Now here click on "View". An additional window will appear. In this select "Choose columns." A dialog box will appear, where the top item will be called "ID process (pid)". In front of him select. Save the settings by pressing OK.
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Then in device Manager click on the Processes tab where you will see the string "ID process". Look at the name of the processwhose ID you need to discover and view its value.
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Now you will learn how to read this value from the command line of the operating system. Click "start" and then click "All programs." Select "Standard program". Here, find the menu item "Command prompt" and run it. Type tasklist and press Enter. After activating this command in the command prompt window will appear listing all the currently active processes. After the name of each of them will be written the ID.
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If you need to quickly complete the process, then it can be done. After you learn the ID of the process, in command prompt type taskkill /pid 0000. Instead of zeroes type the number ID of the processthat is required "to carry". After that, the system will send a signal to its completion, and it will be off.
Note
At the end of the process, be careful. It is possible to inadvertently disable the active process, which is required for the correct operation of the operating system.

Advice 5 : How to find out what ports the program uses

On the computer at the same time operates a variety of programs. If the program uses Internet connection, it is allocated a specific port. Sometimes the user may need to control which port is used by one or the other program.
How to find out what ports the program uses
Instruction
1
The need to determine which ports uses the program (or any program uses ports), typically occurs in the case of suspected infection by computer Trojans. If you notice something suspicious, open a command prompt: "start" – "All programs" – "Accessories" – "Command prompt".
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At the command prompt command tasklist and hit Enter. You will get information about all running system processes. Note the PID is the process ID. It will help to determine which program uses a particular port.
3
In command prompt type netstat –aon and press Enter. You will see a list of current connections. In the column "Local address" at the end of each line indicates the port number. In the graph the PID specified process IDs. Looking at the port number and the corresponding PID, go to the processes list and the ID number will determine which process is using this port.
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If you are unable to name the process to understand which program it belongs to, use the one suitable in this case programs. For example, a program Everest, it is also Aida64. Run the program, select "Operating system", select "Processes". In the processes list find the right and view the line of its launch. This will help to determine which program owns a process.
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Use for the same purpose the program AnVir Task Manager. It allows you to track all the suspicious processes, including the process of programs linking to the Internet. All suspicious processes are highlighted in the programs list in red.
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If you see that port being used unknown to you program, in the presence of the current connection in the "External address" (netstat –aon), you will see the ip address of the computer from which the connection is established. In the column "Status" will be the value ESTABLISHED – if the connection is present at the moment; CLOSE_WAIT if the connection is closed; LISTENING, if the program is waiting for connection. The latter is typical for backdoors - one of the varieties of Trojans.

Advice 6 : How do I find out what traffic

Traffic in computer networks is called the number of transmitted or received for a certain time information. Users of the Internet behind it necessary to monitor very carefully in that case, if from this indicator depends on the amount of a payment services provider in each pay period. To know the amount of wasted Internettrafficand several ways.
How do I find out what traffic
You will need
  • A contract for an Internet connection or username and password in the personal Cabinet.
Instruction
1
Use the "personal account" of the subscriber on the website of your Internet service provider is perhaps the easiest way to know the amount of traffic in the current payment period or for any past months. The log-in link this Cabinet is usually placed on the main page, the login and password is issued together with documents on the connection to the service.
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Each provider develops its own individual user interface for the office, so unfortunately, there is no uniform recommendations where it is in the office to look for the indicators used traffic. For example, when using the Home Internet from Beeline immediately after login, go to the tab "Internet" and click the link "Statistics". On the page which opens, you will see a table where for each of the past 13 months (including today) will be separately indicated the amount of traffic spent on receiving and sending, as well as the total number of network time. If you are not using one of the unlimited plans, then this table will be shown, and corresponding to these indicators, the amount of payment.
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The names of the months in this table is clickable - if you want more accurate traffic distribution by day within a particular month, click the link. Table broken on the day, in turn, provides the opportunity to see a more accurate distribution of traffic within each of the day sessions.
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Use the phone customer support of your Internet service provider if the personal account for some reason unavailable. To know the phone number in the contract on connection to the Internet or received them along with instructions. It must be noted on the website of the company. Call this number and ask the number of traffic you spent with the provider. Be ready to call the contract number and surname/name/patronymic name of the person for whom it is designed.
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Install any software to count sent and received data. However, application of this kind is rather convenient for calculations of the distribution of traffic consumed by computers in your local network, and the statistics of the Internet service provider may not match.
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