Advice 1: How to know the com port number

The Com port is a fairly outdated interface. But at the same time, this port may be present in many models of motherboards. If you for some reason need to connect a device that has a com interface, then you may need to know the port number that is connected to this device, and then make the necessary settings for it to work correctly.
How to know the com port number
You will need
  • - Computer with Windows;
  • program AIDA64 Extreme Edition.
Instruction
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Click on the icon "My computer" right-click. In the context menu select "Properties". If your operating system is Windows XP, then in the next window, select "Hardware" then "device Manager". If your computer has the Windows 7 operating system, then device Manager, you can choose immediately.
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A window will appear that will list all devices that are on your computer. In this list you need to find the string "Ports the CATFISH and LPT". Click on the arrow that is next to the line. This opens a list of com ports that are installed on your PC.
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Click on the port number, right-click, and then in the context menu select "Properties". You will see a device that is connected to this port. This way you can know the number of the com port that is connected to the desired device.
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You can also use the program for diagnostics and monitoring of computer AIDA64 Extreme Edition. The program is free, but in the Internet you can find it trivial version. The capabilities of the free version enough to know the com port number. Download the app from the Internet and install it on the hard disk of your computer.
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Run AIDA64 Extreme Edition. After its launch will have to wait a few seconds. The program will scan the system. After this you will see that the menu is divided into two Windows. You'll need window left in which to find the string "Device". Click on the arrow that is next. Locate the device that is connected to the com ports (could just be written "Com").
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Click on "Device" with the left mouse button. Then in the right window will appear the list of devices that are connected to com ports. So you can know the com port number to which the device is connected. If necessary, you can save the report.

Advice 2 : How to find closed ports

Often there are situations when the installed application is not performing any functions assigned to it. One possible cause is that the port on which the program receives/sends the packets, necessary for its operation, is closed. And how to find closed ports?
How to find closed ports
Instruction
1
The port may be closed as the modem / router and the provider side. In addition, it can be blocked by your firewall. Using standard Windows tools, you can check whether the closed port that the program uses for its operation.
In order to check open/closed ports in Windows, you must use the command line. To run press the key combination "Windows+R". After these steps, a window will open. It is necessary to enter "cmd". Then press "Enter".
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The screen will appear a black window, which experts call the Windows command prompt. You can now run the very tool that will allow you to view a list of closed ports. Enter in the command prompt "netstat".
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After typing, press "Enter". In the command prompt window will display information about all the open ports on your computer. This will be followed by the domain name of your personal computer and are separated from it by a colon. Note that all portsthat are not specified in this list are private. And if a port that your app uses included in this list, it will be necessary to close the application is able to function normally.
Note
If the information provided isn't sufficient, you can explore all the possibilities of the utility "netstat", by running it with –h. This means that in command prompt you need to enter command "netstat -h". Then in the window that appears you will see help on the program "netstat".
Useful advice
Also there is a utility called "Windows Worms Doors Cleaner", which can not only show the open and closed TCP/UDP ports, but also to close the open port. Thus, you can further protect your computer from various online threats, as well as numerous viruses. The program "NetStat Agent 2.0" can replace the built-in "netstat".

Advice 3 : How to find out your proxy

In modern conditions the problem of security and anonymity on the Internet comes to the fore, as every user wants to protect their system from malicious programs. A proxy server is a special network service which allows clients to perform various requests indirectly to other network services. That is, if you go to any site using a proxy, first all content of this site is downloaded on the proxy and then directly to the browser cache on your computer.
How to find out your proxy
Instruction
1
Proxy servers are used to hide the real ip address and remain in the network undetected. How to know proxy server will prompt the browser Mozilla Firefox. Download it from developer website and install it on your computer. Open a web browser. Go sequentially in such items as Tools – preferences – advanced and click the network tab. And next, Set parameters of Firefox connection with Internet” click the word “Customize”. Next you will see a number of menu items. If you activate the checkbox “No proxy”, then at the moment you, when you connect to the Internet proxy server is not in use. If you have activated the tab “Manual proxy configuration”, then everything written below the numbers and letters to describe your proxy server.
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If you are a member of a corporate network, to find out the proxy settings, select the following menu items in control panel: network places - view network connections - local area connection – properties - Internet Protocol TPC\IP properties. Ordinary users have activated the option “Get ip address automatically”. Usually, there are numbers of the form 192.168.0. or any other. So, if there is the address of 10.0.0.40, this designation will thus proxy server that your company uses for its clients.
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If you find it difficult to answer the question of how to find out your proxy port, contact your system administrator, your network. Thanks to their knowledge and experience, he will cope with the task in the shortest possible time. In the Internet there are lots of websites that provide continually updated lists of working proxies. So, if you want to be anonymous on the web, today it is not much of a problem.

Advice 4 : How to know the ip port'

To use the number of port and IP address under which it is online, you must determine what port, what IP address corresponds to at the moment. Each of them will have special flags that will tell the user that assigned them the ID numbers of Windows processes.
How to know the ip port'
You will need
  • Configured and installed network connection.
Instruction
1
Algorithm determine the IPaddresses of the port varies depending on which devices and resources are being used at the moment. For the networked user computer that has access to certain resources, the algorithm is as follows:-Open a command prompt. To do this, click start, click Run, and using the keyboard, type cmd. This will bring up the window of the black command prompt window.-Enter in the command prompt window using the keyboard command rpccallserver, suitesare — the address of a resource on the Network. Click Enter to have the command executed. In the command prompt window opens a table with IPaddressesand their corresponding resources.
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If the port used by a particular device, you will need to perform a number of simple steps to determine the IPaddress of this device:-Activate the device IP address of the port which you want to define. Open a command prompt with the above steps — click start, click Run, and keyboard keys, type cmd. Click Enter to have the command executed.-Enter via the keyboard in a command prompt window the command netstate, and click Enter to run. In the command prompt window will appear each activated coupling device and port identifiers in front of them.
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Instead of the last command you can also use the command NETSTAT-AON|MORE. This command will display to the right of the command prompt window will list the PID, process ID. In the illustration you can see that the PID of the device that has IP address 0.0.0.0:80, that is assigned to the eightieth port, will be equal to 4708.
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Now the user can just load the task Manager — it is likely that you will need to use the "Show processes from each user, and the PID will be found in the list of applications can be used to determine which application manages the device with the specified IP.
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Use information about IPaddresses, the interface can help to maintain anonymity and protect your operating system. To abandon its use impossible, because the IP is necessary for routing information. You can configure the connection of devices and applications via a proxy server that will receive and send data as if on his behalf. However, the vast majority of points in the service field x-forwarded-for address of the end user.
Useful advice
For privacy, you can also use special resources-anonymizers.

Advice 5 : How to know the ip of the proxy server

Proxy server is a computer that serves as an intermediary between the user computer and the computers on the external network. The proxy server accepts requests for information from client systems, receives information from a network (often global) and returns a response to the request. In this case, the author of the query to the external network is not the client, and the mediator.
How to know the ip of the proxy server
You will need
  • - administrator rights.
Instruction
1
If you are using a proxy server directly on your computer, learn its IP address in the network connection properties. This address will act as the default gateway and is displayed in the same field. To start the network connection properties, call the network "Windows 7" via the control panel. Click on connection and select "Properties". In the properties of TCP/IP will be the gateway through which the computer connects to the Internet.
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If you get the address of the proxyserver automatically, you can use the tracert command. Run the utility command line by using "start menu" and type tracert [the name of any external site] and press enter. The tool will display all the network nodes according to an ascending hierarchy up to the specified external. As a rule, at the command line you will get a more accurate and complete information about a proxy server, which is available on the personal computer.
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There are some resources online that serve to define anonymity proxy servers. If you prefer anonymity on the Internet, check the quality of your broker sites http://www.leader.ru/secure/who.html, http://www.whatismyip.com, http://tulahelp.ru/ip and others. However, it should be noted that validation requires an active Internet connection.
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Proxy server required to access internal networks to the Internet, for the temporary storage of frequently requested data (if a proxy has its own cache), to provide anonymity to users and protect their computers against attacks from the external network. In General it can be said that to find out the ip of the proxy server on the computer is not difficult, as you do not even need third-party software.

Advice 6 : How to determine closed ports

Any program that uses the local network or the Internet, making it through any port. A port is a logical system address, the memory through which data is exchanged. Closed are those portswhich cannot create a connection. The reason may be in the settings of the firewall of your computer or server from your provider. Usually, the subscribers can contact your operator or using additional software.
How to determine closed ports
Instruction
1
Run the program, which will be the server for the data. In other words, to check availability or openness of the port, you need a program which will connect customers from the network. For example, you want to play a network game. So, you need to create a server of this game on your PC will connect to the other players. The same applies to other programs designed for operation on the network.
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Click "start" and click "Run." In the command box, type cmd, you open the system console Windows. In the black window, type netstat-b this will start the test currently open and used ports, with the name of the processes. You will see a list in the form of columns with headers: Name, Local address, Foreign address, State. The name means the name of the communication Protocol, TCP or UDP. Also in this column is written the name of the process that is associated with this connection.
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Local address is your computer and the port number on it. External address points to the computer that established the current connection. In the column "Status" may be the record Established — it means the port is opened successfully and connection is established. Message, Closed, Close_wait means that the packet exchange has completed successfully. All other ports are currently inactive and closed, that is, produce no data exchange.
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Note that checking the netstat utility only concerns your computer and does not apply to servers of the ISP. This means that you will not be able in this way to find out blocked ports. Most companies restrict the use of programs for listening or port scanning. However, knowing the exact room and wanting to define a closed port or open, you can use the online verification services.
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Launch any browser and go to the page http://www.whatsmyip.org/port-scanner/ or http://portscan.ru. Enter the window of the test instrument you are interested in the number and press Enter or "Verify". After a few seconds you will get an answer about the availability or unavailability of the port.

Advice 7 : How to determine the proxy server

A proxyserver called a staging server that is used to deliver the user request to the destination server. A Proxy server is typically used to increase the speed of the network or its anonymization.
How to determine the proxy server
Instruction
1
Make sure that you understand the difference existing types of proxy servers: HTTP proxy - the most common type of servers that is compatible with all browsers and support the functionality of web applications;- Socks proxy, subdivided versions of the Protocol to Socks5 and Socks4, is designed to support all of the protocols UDP and TCP/IP, but not compatible with some web applications (mainly used in IRC clients and web pagers);- CGI proxy is a web resource and browser programs.- FTP proxy is used in corporate networks with restricted access to Internet by a firewall.
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Make sure that the clear difference in the possible uses of these types of proxy servers according to their characteristics:- transparent, or transparent - the destination server of the request can see the proxies used and the IP address of the computer; that is, the destination server receives a sham, a malformed address;- anonymizer provides a secure surfing.
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Identify the selected proxy server, using the specialized services proxy checker, or use the following visual differences:- CGI proxy is a regular web page where used the meaning of words for the search, and URL;- HTTP proxy is a server name and port number, separated by a colon: www.server.com:xxxx;- Socks proxy looks the same as HTTP but with port numbers 1080 or 1081 (HTTP proxies in most cases has ports 80, 81, 8080 or 3128);- HTTPS proxy - a type of HTTP and cannot be determined visually (using a dedicated service proxy checker).
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Configure your browser to work with proxyserver - open menu "Service" (for Internet Explorer) and go to "Internet options". Go to the tab "Connections" dialog box and click "network setup". Apply a check mark on "Connect to the Internet through a proxy server" and enter values for name and port in the appropriate fields. Confirm the chosen change by pressing " OK " (for Internet Explorer).

Advice 8 : How to know the port of the proxy server

Work through a proxy server allows you not to reveal your real ip address when visiting web pages. But in order to surf the web anonymously, you should be able to find the server and properly configure the browser. In particular, it is necessary to enter the proxy address and the port that it uses.
How to know the port of the proxy server
Instruction
1
When you search in open sources, the user typically is faced with lists of proxy servers. In each line of the list shows the ip address and the port number is used. A standard entry looks like this: 85.195.96.141:8080, where 85.195.96.141 is the ip address of the server and 8080 is the port that it uses.
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If you work with Internet Explorer, to configure the connection open the "Internet options" – "Connections" – "settings" and enter the proxy server. If you use Firefox browser you will need the tab "Tools" – "Settings" – "Advanced" – "Network" – "Settings". Those who use Opera browser, open "Tools" – "Settings" – "Advanced" – "Network" – "Proxy servers".
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What if you became known only to the server ip but not the port that it uses? You should know that the vast majority of proxy servers are using standard ports. The most common three ports: 80, 8080, 3128. If you don't know the port number, try to substitute them one by one in your browser settings. The likelihood that you will find among them is very high.
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If the server is not working with these ports, try to use these: 8081, 8083, 808, 3129. They are also used quite often, so you have a chance to succeed. There are other common ports, but to touch them does not make sense, as the probability of guessing right is too small.
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In that case, if you are confident in the health of a server and want to log on to the network through it, try to scan it for open ports. To do this, use the scanner XSpider, you can find it on the Internet. Putting the server address, you will receive a full report on open ports on it. One of them is the one you are looking for.
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Use to scan ports with Nmap scanner. The program exists in two versions – the console and gui interface. Very big opportunities to gather information about ports (and not only) has the software package Metasploit, you can download versions for both Windows and Linux: http://www.metasploit.com/download/ In the Metasploit there is a console version of the Nmap scanner.
Note
A proxy server can hide information about the source or user request. In this case, the target server sees only the information about the proxy server, e.g. IP address, but is unable to determine the true source of the request. There are also distorting proxy servers, which transmit the target server false information about the true user.
Useful advice
All proxy servers located in the USA and Europe, and access to them can only be obtained via password. All proxy servers have a connection to the Internet at speeds of up to 100Mb/s. you Have the option to request proxy server up to 3 people (shared proxies) or only for yourself (dedicate proxy).

Advice 9 : How to watch closed ports

When you connect to the Internet, the operating system allocates network programs ports, through which is receiving and sending data. The port can be opened or closed. Sometimes the user may need to monitor the status of ports.
How to watch closed ports
Instruction
1
When talking about the port that it is open, it means that it is currently using some kind of program. To connect with the network can be used more than 65 thousand ports. Those ports, which are currently not used, are closed. Therefore, to see the closed ports as such it is impossible, in the analysis of network connections, watch open ports.
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How to see what ports are open on your computer? To do this, open a command prompt (console): "start" - "All programs" - "Accessories" - "Command prompt". In the black window (it can be customized) type netstat –aon and press Enter. Will list all current connections. In the first column indicates the type of network Protocol, TCP or UDP, in the second you will see the local address.
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Pay attention to the figures walking in lines of the local address after the colon, this is the room open on your computer ports. How to know which program open it? To do this, note the last column – PID. This is the process ID. Knowing it, you can always check the name of the process to which it belongs. To do this in the same console window type the command tasklist. Displays a list of running processes on your computer. In the second column to find your ID on the left will be the name of the process.
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There are times when you have to force to open in the firewall a port – that is to make it open to connect. When it comes to regular Windows firewall, then it is quite possible to work through the console. So, to open a port just type in the console the command netsh firewall add portopening TCP 45678 system and press Enter. This example will open a TCP port 45678.
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To close the open port you must enter the CLI command: netsh firewall delete portopening TCP 45678. This example closes a previously opened port. You can watch the firewall settings by typing in the console etsh firewall show config.
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Whether by means of firewall to forcefully close a specific port, that is to prevent programs to open it? You can, but that doesn't make any sense. Quality Trojans opened by them choose the port randomly, so it is impossible to guess which port should be closed to protect yourself from a Trojan.
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To close all the "extra" ports is also impossible, since the Internet browser uses not only 80 port, but also others. So, first, you must configure the list of trusted applications, and secondly, look in the console the list of connections under suspicious network activity of the computer. Also in the firewall settings it is useful to turn logging connections.
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