The Internet in the local network of some organization is a double-edged weapon: as they say, you want to and pricks. On the one hand, it is almost impossible to work without "communication with the outside world", and there is a lot of useful information in the global network, on the other hand, connecting to the office Internet network dramatically reduces its information security, and negligent employees will not fail to immediately take advantage of " freebies. "
Therefore, the decision to include a proxy server in the local network of the enterprise remains the only correct and most economical one - it will perform the functions of a kind of security on the way to the global information web.
Practice has shown that free proxies are very slow and not suitable for such purposes. Therefore, we decided to buy a couple of elite proxies, where the speed of the Internet channel is 100 Mbit / s.
And in this article we will look at the proxy server settings on a computer with windows 7 OS, and also touch on the question of how to connect the Internet through a proxy server on a local network.
Let's make a reservation right away that the installation of a proxy with your own hands is considered here, but using all kinds of software for these purposes is a topic for a separate, very informative article.
To begin with, we will briefly consider how a proxy server works, and why this device is needed in a simple local network
So, a proxy server is a set of software that regulates the settings for access to external resources (in general, to the global Internet).
Basically, a proxy server indicates that one of its network connections is external and the other is internal.
At the same time, for the internal connection, it assigns certain rules for accessing the external connection.
The reverse function of the proxy server is also important for the office: to prevent overly curious hackers from the “outside world” (from the endless expanses of the Internet) to the information stored in the local network.
The use of a proxy server is available for static IP addresses (i.e., those specified manually in the settings of the network card) from the selected range.
So, if the external network has the address 192.168.X.X, then the internal network should not intersect with it in addressing (for example, 172.16.X.X).
The settings of end devices are set from the appropriate range: that is, 172.16.0.16 or 172.16.230.175 - the main thing is that the first two pairs of numbers match (when using the net mask 255.255.0.0).
It is better to immediately determine what the IP address of your proxy server will be (as a rule, 172.16.0.1 is used).
It should be noted here that both the address of the target device and the address of the server itself depend on the selected netmask.
So, the mask 255.255.255.0 will give you only 256 addresses of the 172.16.0.X type, the 255.255.0.0 mask already provides 65536 addresses of the 172.16.X.X type, and the 255.0.0.0 mask gives 16777216 addresses. And the proxy server address can be any of the selected range.
Let's make a reservation right away that the use of all kinds of programs developed for the MS Windows family, partially or completely performing server functions, is not the best solution for an office. Ideally, the server is a separate computer and exclusively on a Unix system.
However, here we will look at the "classic" option: setting up a proxy server based on standard Windows features.
So, to install a local proxy server on your computer (all parameters are considered for Windows 7):
1. Go to: "Start" -> "Control Panel" -> "Network and Sharing Center" ->
2. In the list that appears, select the shortcut for connecting to the Internet, single-click on it with the right mouse button and select "Properties"
3. Here in the "Access" tab:
Check the box next to "Allow other network users to use this computer's Internet connection."
- Then a system warning may appear that the settings will change - confirm this action;
4. In the "Network" tab, select "Internet Protocol Version 4 (TCP / IP)" and click the "Properties" button
On this, the minimum settings of the proxy server are completed, then, if desired, you can separately set authorization (login / password), content filtering, monitoring of use, etc. (this is additional software).
After configuring the server itself, you must also configure the connection to it on all computers in the local network.
So, to go to the proxy server on a computer with windows 7 OS:
1. Go to: "Start" -> "Control Panel" -> "Network and Sharing Center" -> "Change adapter settings".
2. In the list that appears, select your connection, right-click on it and select "Properties":
In the Networking tab, select Internet Protocol Version 4 (TCP / IP) and click the Properties button.
- Select "Use the following IP address".
- Specify the IP address of this computer from the selected range.
- Specify the selected netmask
- In the "Default gateway" field, enter the IP address of our proxy server
Click OK and OK again
3. Go to the browser options.
Here you need to install the following data:
Go to: "Connections" -> "Network settings" -> "Use a proxy server for local connections";
Enter the address of your proxy server (leave port 80)
Also, these parameters can be registered through the windows 7 control panel:
Often, when connecting through a proxy server, a connection error occurs (the server refuses to accept the connection).
As a rule, the reason lies either in the communication line itself, or in the installed settings.
The "ping" command will help to check the connection with the server at the physical level. If the line is ok, restart the server (still on MS Windows) and check the settings of both the server itself and the client.
Recently, questions related to what a proxy server is, how to safely surf the Internet, hiding your IP, and how to get to sites blocked at work (all the same, they are cunning, users, because they want to deceive one admin with the help of another admin) :)).
To write this article, we took several IPv4 proxies from a service we tested in order to clearly demonstrate all the settings in the form of step-by-step instructions.
Well, therefore, I decided to write an article, as far as possible, answering these questions.
All terminology (but not the entire article) is written based on Wikipedia or simply copied from the corresponding material there. This was done in order to save time, as well as from the point of view of expediency, because I see no reason to rephrase what is already well written and almost completely coincides with what I wanted to write.
A proxy server (from the English proxy - "representative, authorized") is a service in computer networks that allows clients to make indirect requests to other network services.
First, the client connects to such a server and requests from it any resource located on another server on the network \ Internet. Then the server either connects to the specified server and receives the resource from it, or returns the resource from its own cache (tobish from the resource already saved to itself) (if, of course, it has this cache).
Most often, these are used for the following purposes:
Proxy servers are divided into open and closed. Open - these are those that can be accessed by any user of the Internet. Closed, of course, on the contrary.
In this article, we are interested in open proxies, so let's take a closer look at them.
An open proxy server is a server that allows almost any network node (client, tobish, say, you) to access other network nodes through itself (to all sorts of sites or somewhere else).
For reference: when I say network, I mean not only the local, but also the Internet.
Open proxies are also divided into two types:
Anonymous and ordinary.
In addition to anonymity, in the event of a difference in the price of traffic in different networks, an open proxy server located in its "own" network can be used to receive more expensive traffic from a "foreign" network. For example, many Russian users who are denied access to foreign sites at work can still get such access through an open proxy server.
As for the speed of work, it is much less, because, in fact, traffic, in the form of a request, goes through an additional server, and these delays are much greater than when requesting directly. Open proxies are used, as a rule, to perform some specific operation, when it is not speed that is important, but the achievement of the goal (access to some resource, etc., etc.).
As you understand, an open proxy poses some problem, since such anonymity can allow you to violate the law and the terms of service on the Internet with impunity, and therefore, as a result, the sites of some Internet services prohibit access to their resources from open proxy servers (for example, - these are Yandex mail services).
Okay, the theory is outlined. Let's get down to practice.
There are several ways to work through a proxy: this is either through network settings (globally), or through program settings (pointwise, that is, let's say only for).
In this article we will consider the global option for changing the settings, and already within the framework of all the rest, I will tell you how, for example, based on a plugin for or a program for the entire system.
I want to say right away that the option of changing the settings globally, frankly, is not entirely global. The fact is that in Windows there is no concept of a global proxy as such, there is only the ability to configure the "conditionally global option", that is, only for such programs that can take proxy settings from Internet Explorer. For all others, you will have to specify the desire to use proxies in their own (programs) settings.
First, we need to find an open proxy server. This can be done by a simple query in: " anonymous proxy list" or " list of open anonymous proxies"or" open proxy list "or whatever else would come to mind. There are quite a few sites with lists of proxy servers, although not all of them work, so you will have to suffer during the selection.
See:
Ping to the proxy server and in general the existence of something at the address you found can be checked by doing the following: Start - Run - cmd - Ok. In the window (console) that appears, enter " ping space server address"and press the enter button. Example:
ping 127.0.0.1:80
If the server is available, then 4 packets will pass (maybe less), which will show, in fact, a ping, and the presence of a ping confirms the existence of something at the specified IP.
If it is not available, then nothing will go anywhere.
Having found a still working server, we need to somehow tell the computer that, in fact, we want to drive traffic through it. This can be done in two ways (the third is not quite the way), which have a fundamental difference:
Global way
You can run all computer traffic through a proxy, i.e. set a global setting. In this case, ALL programs in one way or another working with the Internet (browser, ICQ, FTP, etc., etc.) will be accessed through it.
To do this, go to: Start - Settings - Control Panel - Internet options- Connections - Network settings. There we put a checkmark "use a proxy server", register the address and port, click OK. 
It is important to read the checkbox carefully, because it says that it does not apply to remote and VPN connections. Those. if you have one of these types of connections (for example, corbine) - nothing will come of it.
Next should be shown to local services. Depending on the operating system you are running on, issue the command:
On Windows XP:
Older Windows:
netsh winhttp import proxy source = ie
The result will be like this:
Local way
Almost every program has the ability to specify a proxy in the settings. Accordingly, each program in which you specify it will work through this same protocol, and the rest will access the Internet as usual, directly. Conveniently, if you do not need any anonymity anywhere except web pages or ICQ, then, in fact, all this can be configured.
Well, or, alternatively, you can configure the operation of different programs through different proxies. Where to set up? Each program has its own place, but in general it is not difficult to find. In Mozilla FireFox, the settings reside at "Tools - Options - Advanced - Network - Connection - Configure"
Half measure or extension
If you need to get to a page that is blocked for some reason or you do not want to show your IP on this page, but are too lazy to look for and configure a proxy, then you can use such a site or extension (like);
VPN can be used. A cycle of articles on this topic lives on.
There are more ways, but I don’t want to disclose them yet. In addition, the software method will be more practical and convenient. In general, it is worth waiting for the second part of the article, and not dwelling on the first.
To be honest, it's hard for me to imagine a person who will use this sim to hide his IP and surf the Internet anonymously.
This method of self-defense somewhat smacks of paranoia or unkind intentions, but still .. It's still useful to know about this, if only because local networks (office, educational, home, etc.) are often organized through them, and indeed you never know why, when and where it can come in handy.
Well, yes, it can be useful if suddenly you are banned by IP somewhere and you need to sneak into the site on the sly .. Then yes :)
As always, if you have questions, thoughts, additions and all that stuff, then welcome to the comments on this article.
The "classic" question "how to use a proxy server" is relevant for most novice "users". And here we will consider what, in fact, a proxy is needed for, and how to use the server "at home".
With this connection, all data "passes" through an additional computer, the main purpose of which is to provide anonymity when using the Internet: the proxy server, as an intermediary, hides the client's real IP address for the target server.
However, before using the proxy server, you need to configure the software accordingly to work with the "intermediary". Even novice users can do such a setting: it is enough to specify the server address and port in the browser parameters.
Typically, IP and port are written on one line, in the short address: port format (for example, 213.24.76.255.1: 8080), however, in most programs, the address and port must be specified separately, without a colon separator.
When the parameters are specified in the software, all data transmitted via the global network will first go to the "intermediary" server, and then to your personal computer.
In this case, the proxy server can be configured for all connections - this setting is performed at the operating system level, and by default all programs will use this connection.
You can also configure the proxy server applicable to a separate program (for example, a browser or torrent client) - in this case, the proxy connection will be used exclusively in this application.
To configure a proxy for all connections, follow these steps:
Now all programs that use the system connection settings (including the Internet Explorer or Edge browser) will transmit data through the specified server.
Sometimes it is required that the proxy connection is used only in one specific application, and the rest of the programs are connected according to the standard scheme. In this case, a direct connection must be established in the operating system settings, and the proxy IP address must be specified in the parameters of the application itself. Most modern programs (for example, the popular Firefox browser or the µTorrent torrent client) allow you to specify the proxy server configuration.
If you need to bypass IP blocking or visit a site that is not available in your region, then you just need to learn how to use a proxy server. First, let's find out what it is, and in what other cases it is used. Why and how to use a proxy server? Many people ask themselves this simple question. The answer is also very simple. In fact, a proxy server is needed, first of all, in order to look at the Internet "through the eyes" of others - using a computer, or rather, a server located elsewhere.
Why and how to use a proxy server? Many people ask themselves this simple question. The answer is also very simple. In fact, a proxy server is needed, first of all, in order to look at the Internet "through the eyes" of others - using a computer, or rather, a server located elsewhere.
Here's how to apply this opportunity - everyone's business.
Here are just some examples of using proxy servers, paid and free:
As you can see, the use of a proxy server is almost ubiquitous. If you also want to use a proxy server, then you need to know how to arrange it.
First of all, you need a browser, and second, we need the address of the desired proxy server.
Some proxies require a fee for their services. When asked which proxy server is better to use, do not rush to answer "free". It happens that a paid server offers you several necessary services at once. The first is caching. If the server is located in your city, then the download speed from it is much higher than the average download speed from the global Internet space. Thus, if you often visit certain sites, then the second time they will start loading you much faster if caching is enabled on the server.
Secondly, there is compression. This will save more than you will spend on a proxy server if your network connection is billed according to the amount of downloaded data, not time.
Thirdly, this is history management, bookmarks, and other small, but very useful functions that significantly improve the possibilities of Internet browsing.
In order to connect to the proxy server of your choice, you need:
Instructions
When working through a proxy server, you leave exactly its ip-address on all visited resources - provided that it has the ability to hide its IP. When choosing a proxy, you should look at its characteristics and check whether it provides hiding your real address.
To find a suitable proxy, go to this resource: https://free.proxy-sale.com. On its pages, you can not only select the appropriate option, but also check the server's performance - for this, copy its data and paste it into the field in the "Check proxy server" tab. If you have several options at once, use the "Check proxy lists" tab.
When choosing a proxy, pay attention to the speed of its response - the lower it is, the better. Look at the Anm column as well, it shows if the server is anonymous. Highly anonymous proxies are marked as HIA in the list. To work with a browser, you need an HTTP proxy.
Now set up your browser. If you have Internet Explorer, open the following sequence: "Service" - "Internet Options" - "Connections" and click the "Settings" button. Check the box "Use a proxy server", then specify the required data - address and port number. For example, if the proxy information is 85.214.84.104:8080, enter 85.214.84.104 in the address field and 8080 in the port field.
In the event that you are working with the Mozilla Firefox browser, open: "Tools" - "Options" - "Advanced" - "Network". Click "Configure" in the "Configure Firefox Internet Connection Settings" section. In the window that opens, select "Manual proxy", specify the address and port number, save the changes.
If you have Opera, open in sequence: "Service" - "Settings" - "Advanced" - "Network". Click the "Proxy servers" button, mark the types of connections you need, usually HTTP, HTTPS, FTP. Enter the proxy server address and port into the lines of these protocols. Click OK.
To check if the proxy server provides anonymity, go to any network IP checker service. For example, here: http://www.ip-ping.ru/ Check the displayed ip-address with and without a proxy - the addresses must be different.
Sources:
A proxy server is a special computer that mediates user access to a variety of Internet resources. If, when accessing the Internet without using a proxy, the user directly accesses a web page or other resource, then when working through a proxy, the user turns to the proxy server, and that server already requests the necessary resource on its own.
The need to configure a proxy can arise for several reasons. Using a proxy server can help speed up the download of information from the Internet and save traffic if several users who are "behind the proxy", that is, connected through it, need the same information. In this case, the information is sent to the server once and is cached on it, and each user gets access to it without having to repeat it again.
The proxy helps the restrictions imposed by some Internet resources. For example, a certain site can block visitors who have a Russian, or vice versa, a non-Russian IP address. By connecting through an American or European proxy, you can easily eliminate this problem.
To start using Internet resources through a proxy server, you need to configure a proxy. You need to configure programs that work with Internet data, such as a browser, a download manager, an email client. This is done very simply, for example, the Internet Explorer browser is configured as follows:
1. Open the Tools - Internet Options menu, select the Connections tab.
2. Select the connection you are using, or click "Network Settings" if access is via a local network.
3. Check the "Use proxy" box, specify the address and port of the proxy. This data will be provided by the system administrator, and if we are talking about a free proxy on the Internet, then they can be found on his page.
4. Click OK for the changes to take effect.
The setup is complete, you are now getting the information through the proxy server. You can check this using services that display the visitor's IP address, for example http://moi-ip.ru/ or http://2ip.ru/. If everything was done correctly, then you should see the address of your proxy server as the IP address. It is this address that will be considered "your" and other resources that you will visit.
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A proxy server allows users from a local network to access the Internet. It also has another side - the proxy server helps to hide its presence on some resources. A good proxy server helps to optimize caching and traffic, and, accordingly, increase the speed of the Internet.
You will need
Instructions
Next, you need to "hammer" this proxy into the browser so that it connects through it. In Opera it is "Tools" -> "General settings" -> "Advanced" tab -> "Network", the button "Proxy server". As a rule, the proxy lists give the ip: port list, where Ip is IP, port is the port, respectively, which fits into the corresponding fields. As a rule, the selected type is HTTP. For Internet Explorer - "Tools" -> "Internet Options" -> "Connections" tab -> "Network Settings".
note
Free proxies don't last long.
Helpful advice
You can also enable a proxy server using special programs that automatically scan available servers and connect to them with one click, and you can use your Internet applications that will connect through these proxies.
Sources:
To perform some tasks related to the Internet, the user of a personal computer may need to install his own proxy server, which can help solve numerous problems. For example, you need to speed up your browser or hide your computer on the network.
Instructions
First you need the server itself. How, we will install squid, which must first be downloaded from the Internet. This can be done on the official website www.squid-cache.org/... After you have downloaded the squid.rar archive, unpack it into the c: squid folder. Of course, you can install it in, but then you will have to adjust the .bat files. Next, install squid as a system service and create a cache by running the install_step1.bat and install_step2.bat files.
Now squid25 is running on your computer, and you can check its functionality by going to "My Computer". Next, click the "Management" tab, and then "Services". Find a file there called squid25. After checking, you need to register the settings in the browser by entering the address 127.0.0.1 and port 3128. Each browser has a different path to these settings, but finding this place is not difficult at all.
In almost all browsers, the proxy server settings are the same. It is also worth noting that you can change the parameters at any time, for example, replacing it with another proxy server. This is done in almost the same way as installing from scratch. Further, we can assume that the process of installing the proxy server on your computer has come to an end.
Of course, there are a sufficient number of other options for getting out of this situation, but this one is the most convenient and accessible for the average user of a personal computer. Remember that the above service does not provide a solution to all possible problems, but only slightly speeds up the Internet. Therefore, look for a proxy server that is right for your needs. As you can see, it is really possible to install this function on a computer, the main thing is to configure all the system parameters one by one.
Proxy addresses are used to access the Internet through any server or computer. They are usually used to configure Internet access within a local network or to hide a valid IP address.
Instructions
If you need to configure a proxy server for the browser, then first find the values of the working servers. If using the FireFox browser, follow these steps. Run the program and open its settings. Go to the "Advanced" tab.
Open the "Network" menu. In the item "Internet connection" click the "Configure" button. Activate the "Manual proxy service configuration" option. Write down the values of the proxy servers and their ports yourself. Click the "OK" button and restart the application.
In the event that you are using the Opera browser, press the key combination Ctrl and F12. In the menu that opens, go to the "Advanced" tab. Open the "Network" menu and click the "Proxy" button. Highlight the "Configure proxy servers manually" option. Set the values of the required servers. Save the settings.
If you need to configure access to the Internet server within the entire computer, then open the list of network connections. Select the local network through which this computer is connected to the server. Right-click on its icon and select "Properties".
In the menu that opens, select the line "Internet Protocol TCP / IP" and click the "Properties" button. Check the box next to Use the following IP address. Fill in the "IP address" field so that the first three segments match the server address, and the fourth is not identical with other computers on the local network.
Now write in the field "Default gateway" the address of the proxy server. In this case, you do not need to register the port. Fill in the Preferred DNS Server field in the same way. If you have several proxy servers, you can register the address of another server in the "Alternative DNS server" field. Save the settings for this network adapter.
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You can use a router, router, desktop computer, or even laptop to create your own proxy server. The latter option makes sense to take into account when several mobile computers are connected to the Internet.
You will need
Instructions
First, determine which of your laptops will act as the proxy server. It is recommended to choose the most powerful mobile computer for this purpose. Please also note that it must be constantly turned on for the second to access the Internet. Connect the network cable of the provider to the network card of the selected mobile computer.
Set up your internet connection normally. Leave this connection for a while and create a wireless local area network. Windows Seven has made this process much easier. Open the Network and Sharing Center by clicking on the network icon in the system tray. Go to the "Manage Wireless Networks" menu.
