Top 5 Free VPN Servers : Best Free VPN Service & Downloads

Top 5 Free VPN Servers : Best Free VPN Service & Downloads

 

"Free VPN Servers" are in great need to remain anonymous on web. After my previous article for "Best Free Proxy Sites" I'm again here with Top Free VPN Service which will make you anonymous while surfing the web. You just require to Download Free VPN Software on your pc and then to enjoy Free VPN Service & Servers.

Why you need Free VPN Service and Servers ?

• To stay anonymous while surfing internet.
• To access banned sites of your IP
• Access Facebook, Twitter, etc from the banned places
• To unblock the website which is banned in School or Offices

So if you are bound with any of the above problem then you have to go with this Top 5 Free VPN Downloads And Servers. Proxy sites is not much secured then Free VPN Service. Best VPN Softwares will let you go through the secure tunnel, thus so one can track you on web.

Free VPN Servers : Best Free VPN Service & Downloads

These is great Top and Best list of Free VPN Servers.

1. CyberGhost

CyberGhost is my all time favorite best service which provides free trial for 1 Month. 

2. OpenVPN
3. JapVPN
4. GPass
5. MacroVPN

So, Friends I hope you enjoyed this article on Best Free VPN Service & Downloads and if you any problem with Top 5 Free VPN Servers or If you have any other Free VPN Software in your mind. Then please do comment.

These above top list is my favorite Free VPN Servers.

Read More

Top 5 Free VPN Servers : Best Free VPN Service & Downloads

Top 5 Free VPN Servers : Best Free VPN Service & Downloads

 

"Free VPN Servers" are in great need to remain anonymous on web. After my previous article for "Best Free Proxy Sites" I'm again here with Top Free VPN Service which will make you anonymous while surfing the web. You just require to Download Free VPN Software on your pc and then to enjoy Free VPN Service & Servers.

Why you need Free VPN Service and Servers ?

• To stay anonymous while surfing internet.
• To access banned sites of your IP
• Access Facebook, Twitter, etc from the banned places
• To unblock the website which is banned in School or Offices

So if you are bound with any of the above problem then you have to go with this Top 5 Free VPN Downloads And Servers. Proxy sites is not much secured then Free VPN Service. Best VPN Softwares will let you go through the secure tunnel, thus so one can track you on web.

Free VPN Servers : Best Free VPN Service & Downloads

These is great Top and Best list of Free VPN Servers.

1. CyberGhost

CyberGhost is my all time favorite best service which provides free trial for 1 Month. 

2. OpenVPN
3. JapVPN
4. GPass
5. MacroVPN

So, Friends I hope you enjoyed this article on Best Free VPN Service & Downloads and if you any problem with Top 5 Free VPN Servers or If you have any other Free VPN Software in your mind. Then please do comment.

These above top list is my favorite Free VPN Servers.

Read More

Top 5 Free VPN Servers : Best Free VPN Service & Downloads

Top 5 Free VPN Servers : Best Free VPN Service & Downloads

 

"Free VPN Servers" are in great need to remain anonymous on web. After my previous article for "Best Free Proxy Sites" I'm again here with Top Free VPN Service which will make you anonymous while surfing the web. You just require to Download Free VPN Software on your pc and then to enjoy Free VPN Service & Servers.

Why you need Free VPN Service and Servers ?

• To stay anonymous while surfing internet.
• To access banned sites of your IP
• Access Facebook, Twitter, etc from the banned places
• To unblock the website which is banned in School or Offices

So if you are bound with any of the above problem then you have to go with this Top 5 Free VPN Downloads And Servers. Proxy sites is not much secured then Free VPN Service. Best VPN Softwares will let you go through the secure tunnel, thus so one can track you on web.

Free VPN Servers : Best Free VPN Service & Downloads

These is great Top and Best list of Free VPN Servers.

1. CyberGhost

CyberGhost is my all time favorite best service which provides free trial for 1 Month. 

2. OpenVPN
3. JapVPN
4. GPass
5. MacroVPN

So, Friends I hope you enjoyed this article on Best Free VPN Service & Downloads and if you any problem with Top 5 Free VPN Servers or If you have any other Free VPN Software in your mind. Then please do comment.

These above top list is my favorite Free VPN Servers.

Read More

How to dual boot Linux and Windows XP

Unlike Windows Vista, Windows XP does not have a built in tool to resize a partition. Because of this you have to make use of another means. One of my favorite tools for this task is the GParted Live CD. What the GParted Live CD does is boot into a very simple Linux desktop that contains the GParted tool to allow yo to resize your XP partition.
Before I get started I want to issue a warning. I have never had a problem using GParted Live CD, but that doesn’t mean the system is immune to problems. Problems can happen. To that end make sure you back up your XP data and even create a restore CD. This way, just in case GParted Live wreaks havoc on your data, you can restore it easily.

With that warning out of the way, let’s take a look at how GParted Live works. The screen shots you are about to see are from a VMWare installation on a Linux installation. I created a Fat32 partition in order to show you how simple GParted Live is to use.
Step One
The first thing you need to do is to defragment your XP drive. This will make sure your data is where it needs to be as well as keeping your data from the end of your drive. Once your drive is fully defragmented you are ready for step two. Of course, before step two you will need to download and burn the iso image onto CD to use.
Step Two
Put the GParted Live CD into your cd drive and reboot your machine. Getting GParted Live is simple to start. You will be asked a few questions about your keyboard, your language, and your graphics. As for the graphics, the default entry should work fine.
Once you are booted into GParted Live you will find yourself in what might be a familiar desktop. GParted Live is based on Fluxbox and is even more minimal than the standard Fluxbox.

Full sized Fat32 partition

Step Three
Select the partition you want to resize and click the “Resize/Move” button. When you click that a new window will appear asking how much you want the partition to be resized.

Set the amount to resize

You want to make sure that you are resized the space FOLLOWING the XP partition. Once you have entered the amount you want to resize the space FOLLOWING the parition hit enter and then click the Resize/Move button.
Step Four
The next step is to click the Apply button. Once you click this button the resizing will take place. Depending upon the size you have chosen to free up, this process might take some time.

Click Apply

Once the resizing has taken place you will notice the partition names will change.

A Resized partition

That’s it. click the Exit button (the red square at the top left) to shutdown GParted Live. Take the GParted Live CD out of the CD drive and let your machine reboot. Make sure XP will boot properly before you continue. Once you are sure XP will boot properly, reboot with your Linux distribution CD in the drive and install Linux.
You can follow my Illustrated Guide to Installing Ubuntu Linux for a simple Linux install how to. Another article to read, that will get you up to speed on dual booting, is my How To Dual Boot Windows Vista and Linux.
Final Thoughts
Dual booting XP and Linux doesn’t have to be difficult. Using GParted Live CD will make this task far simpler than you thought it could be. But do remember, BACK UP THAT DATA

Read More

How to dual boot Linux and Windows XP

Unlike Windows Vista, Windows XP does not have a built in tool to resize a partition. Because of this you have to make use of another means. One of my favorite tools for this task is the GParted Live CD. What the GParted Live CD does is boot into a very simple Linux desktop that contains the GParted tool to allow yo to resize your XP partition.
Before I get started I want to issue a warning. I have never had a problem using GParted Live CD, but that doesn’t mean the system is immune to problems. Problems can happen. To that end make sure you back up your XP data and even create a restore CD. This way, just in case GParted Live wreaks havoc on your data, you can restore it easily.

With that warning out of the way, let’s take a look at how GParted Live works. The screen shots you are about to see are from a VMWare installation on a Linux installation. I created a Fat32 partition in order to show you how simple GParted Live is to use.
Step One
The first thing you need to do is to defragment your XP drive. This will make sure your data is where it needs to be as well as keeping your data from the end of your drive. Once your drive is fully defragmented you are ready for step two. Of course, before step two you will need to download and burn the iso image onto CD to use.
Step Two
Put the GParted Live CD into your cd drive and reboot your machine. Getting GParted Live is simple to start. You will be asked a few questions about your keyboard, your language, and your graphics. As for the graphics, the default entry should work fine.
Once you are booted into GParted Live you will find yourself in what might be a familiar desktop. GParted Live is based on Fluxbox and is even more minimal than the standard Fluxbox.

Full sized Fat32 partition

Step Three
Select the partition you want to resize and click the “Resize/Move” button. When you click that a new window will appear asking how much you want the partition to be resized.

Set the amount to resize

You want to make sure that you are resized the space FOLLOWING the XP partition. Once you have entered the amount you want to resize the space FOLLOWING the parition hit enter and then click the Resize/Move button.
Step Four
The next step is to click the Apply button. Once you click this button the resizing will take place. Depending upon the size you have chosen to free up, this process might take some time.

Click Apply

Once the resizing has taken place you will notice the partition names will change.

A Resized partition

That’s it. click the Exit button (the red square at the top left) to shutdown GParted Live. Take the GParted Live CD out of the CD drive and let your machine reboot. Make sure XP will boot properly before you continue. Once you are sure XP will boot properly, reboot with your Linux distribution CD in the drive and install Linux.
You can follow my Illustrated Guide to Installing Ubuntu Linux for a simple Linux install how to. Another article to read, that will get you up to speed on dual booting, is my How To Dual Boot Windows Vista and Linux.
Final Thoughts
Dual booting XP and Linux doesn’t have to be difficult. Using GParted Live CD will make this task far simpler than you thought it could be. But do remember, BACK UP THAT DATA

Read More

How to dual boot Linux and Windows XP

Unlike Windows Vista, Windows XP does not have a built in tool to resize a partition. Because of this you have to make use of another means. One of my favorite tools for this task is the GParted Live CD. What the GParted Live CD does is boot into a very simple Linux desktop that contains the GParted tool to allow yo to resize your XP partition.
Before I get started I want to issue a warning. I have never had a problem using GParted Live CD, but that doesn’t mean the system is immune to problems. Problems can happen. To that end make sure you back up your XP data and even create a restore CD. This way, just in case GParted Live wreaks havoc on your data, you can restore it easily.

With that warning out of the way, let’s take a look at how GParted Live works. The screen shots you are about to see are from a VMWare installation on a Linux installation. I created a Fat32 partition in order to show you how simple GParted Live is to use.
Step One
The first thing you need to do is to defragment your XP drive. This will make sure your data is where it needs to be as well as keeping your data from the end of your drive. Once your drive is fully defragmented you are ready for step two. Of course, before step two you will need to download and burn the iso image onto CD to use.
Step Two
Put the GParted Live CD into your cd drive and reboot your machine. Getting GParted Live is simple to start. You will be asked a few questions about your keyboard, your language, and your graphics. As for the graphics, the default entry should work fine.
Once you are booted into GParted Live you will find yourself in what might be a familiar desktop. GParted Live is based on Fluxbox and is even more minimal than the standard Fluxbox.

Full sized Fat32 partition

Step Three
Select the partition you want to resize and click the “Resize/Move” button. When you click that a new window will appear asking how much you want the partition to be resized.

Set the amount to resize

You want to make sure that you are resized the space FOLLOWING the XP partition. Once you have entered the amount you want to resize the space FOLLOWING the parition hit enter and then click the Resize/Move button.
Step Four
The next step is to click the Apply button. Once you click this button the resizing will take place. Depending upon the size you have chosen to free up, this process might take some time.

Click Apply

Once the resizing has taken place you will notice the partition names will change.

A Resized partition

That’s it. click the Exit button (the red square at the top left) to shutdown GParted Live. Take the GParted Live CD out of the CD drive and let your machine reboot. Make sure XP will boot properly before you continue. Once you are sure XP will boot properly, reboot with your Linux distribution CD in the drive and install Linux.
You can follow my Illustrated Guide to Installing Ubuntu Linux for a simple Linux install how to. Another article to read, that will get you up to speed on dual booting, is my How To Dual Boot Windows Vista and Linux.
Final Thoughts
Dual booting XP and Linux doesn’t have to be difficult. Using GParted Live CD will make this task far simpler than you thought it could be. But do remember, BACK UP THAT DATA

Read More

How to dual boot Linux and Windows XP

Unlike Windows Vista, Windows XP does not have a built in tool to resize a partition. Because of this you have to make use of another means. One of my favorite tools for this task is the GParted Live CD. What the GParted Live CD does is boot into a very simple Linux desktop that contains the GParted tool to allow yo to resize your XP partition.
Before I get started I want to issue a warning. I have never had a problem using GParted Live CD, but that doesn’t mean the system is immune to problems. Problems can happen. To that end make sure you back up your XP data and even create a restore CD. This way, just in case GParted Live wreaks havoc on your data, you can restore it easily.

With that warning out of the way, let’s take a look at how GParted Live works. The screen shots you are about to see are from a VMWare installation on a Linux installation. I created a Fat32 partition in order to show you how simple GParted Live is to use.
Step One
The first thing you need to do is to defragment your XP drive. This will make sure your data is where it needs to be as well as keeping your data from the end of your drive. Once your drive is fully defragmented you are ready for step two. Of course, before step two you will need to download and burn the iso image onto CD to use.
Step Two
Put the GParted Live CD into your cd drive and reboot your machine. Getting GParted Live is simple to start. You will be asked a few questions about your keyboard, your language, and your graphics. As for the graphics, the default entry should work fine.
Once you are booted into GParted Live you will find yourself in what might be a familiar desktop. GParted Live is based on Fluxbox and is even more minimal than the standard Fluxbox.

Full sized Fat32 partition

Step Three
Select the partition you want to resize and click the “Resize/Move” button. When you click that a new window will appear asking how much you want the partition to be resized.

Set the amount to resize

You want to make sure that you are resized the space FOLLOWING the XP partition. Once you have entered the amount you want to resize the space FOLLOWING the parition hit enter and then click the Resize/Move button.
Step Four
The next step is to click the Apply button. Once you click this button the resizing will take place. Depending upon the size you have chosen to free up, this process might take some time.

Click Apply

Once the resizing has taken place you will notice the partition names will change.

A Resized partition

That’s it. click the Exit button (the red square at the top left) to shutdown GParted Live. Take the GParted Live CD out of the CD drive and let your machine reboot. Make sure XP will boot properly before you continue. Once you are sure XP will boot properly, reboot with your Linux distribution CD in the drive and install Linux.
You can follow my Illustrated Guide to Installing Ubuntu Linux for a simple Linux install how to. Another article to read, that will get you up to speed on dual booting, is my How To Dual Boot Windows Vista and Linux.
Final Thoughts
Dual booting XP and Linux doesn’t have to be difficult. Using GParted Live CD will make this task far simpler than you thought it could be. But do remember, BACK UP THAT DATA

Read More

How to dual boot Linux and Windows XP

Unlike Windows Vista, Windows XP does not have a built in tool to resize a partition. Because of this you have to make use of another means. One of my favorite tools for this task is the GParted Live CD. What the GParted Live CD does is boot into a very simple Linux desktop that contains the GParted tool to allow yo to resize your XP partition.
Before I get started I want to issue a warning. I have never had a problem using GParted Live CD, but that doesn’t mean the system is immune to problems. Problems can happen. To that end make sure you back up your XP data and even create a restore CD. This way, just in case GParted Live wreaks havoc on your data, you can restore it easily.

With that warning out of the way, let’s take a look at how GParted Live works. The screen shots you are about to see are from a VMWare installation on a Linux installation. I created a Fat32 partition in order to show you how simple GParted Live is to use.
Step One
The first thing you need to do is to defragment your XP drive. This will make sure your data is where it needs to be as well as keeping your data from the end of your drive. Once your drive is fully defragmented you are ready for step two. Of course, before step two you will need to download and burn the iso image onto CD to use.
Step Two
Put the GParted Live CD into your cd drive and reboot your machine. Getting GParted Live is simple to start. You will be asked a few questions about your keyboard, your language, and your graphics. As for the graphics, the default entry should work fine.
Once you are booted into GParted Live you will find yourself in what might be a familiar desktop. GParted Live is based on Fluxbox and is even more minimal than the standard Fluxbox.

Full sized Fat32 partition

Step Three
Select the partition you want to resize and click the “Resize/Move” button. When you click that a new window will appear asking how much you want the partition to be resized.

Set the amount to resize

You want to make sure that you are resized the space FOLLOWING the XP partition. Once you have entered the amount you want to resize the space FOLLOWING the parition hit enter and then click the Resize/Move button.
Step Four
The next step is to click the Apply button. Once you click this button the resizing will take place. Depending upon the size you have chosen to free up, this process might take some time.

Click Apply

Once the resizing has taken place you will notice the partition names will change.

A Resized partition

That’s it. click the Exit button (the red square at the top left) to shutdown GParted Live. Take the GParted Live CD out of the CD drive and let your machine reboot. Make sure XP will boot properly before you continue. Once you are sure XP will boot properly, reboot with your Linux distribution CD in the drive and install Linux.
You can follow my Illustrated Guide to Installing Ubuntu Linux for a simple Linux install how to. Another article to read, that will get you up to speed on dual booting, is my How To Dual Boot Windows Vista and Linux.
Final Thoughts
Dual booting XP and Linux doesn’t have to be difficult. Using GParted Live CD will make this task far simpler than you thought it could be. But do remember, BACK UP THAT DATA

Read More

How to dual boot Linux and Windows XP

Unlike Windows Vista, Windows XP does not have a built in tool to resize a partition. Because of this you have to make use of another means. One of my favorite tools for this task is the GParted Live CD. What the GParted Live CD does is boot into a very simple Linux desktop that contains the GParted tool to allow yo to resize your XP partition.
Before I get started I want to issue a warning. I have never had a problem using GParted Live CD, but that doesn’t mean the system is immune to problems. Problems can happen. To that end make sure you back up your XP data and even create a restore CD. This way, just in case GParted Live wreaks havoc on your data, you can restore it easily.

With that warning out of the way, let’s take a look at how GParted Live works. The screen shots you are about to see are from a VMWare installation on a Linux installation. I created a Fat32 partition in order to show you how simple GParted Live is to use.
Step One
The first thing you need to do is to defragment your XP drive. This will make sure your data is where it needs to be as well as keeping your data from the end of your drive. Once your drive is fully defragmented you are ready for step two. Of course, before step two you will need to download and burn the iso image onto CD to use.
Step Two
Put the GParted Live CD into your cd drive and reboot your machine. Getting GParted Live is simple to start. You will be asked a few questions about your keyboard, your language, and your graphics. As for the graphics, the default entry should work fine.
Once you are booted into GParted Live you will find yourself in what might be a familiar desktop. GParted Live is based on Fluxbox and is even more minimal than the standard Fluxbox.

Full sized Fat32 partition

Step Three
Select the partition you want to resize and click the “Resize/Move” button. When you click that a new window will appear asking how much you want the partition to be resized.

Set the amount to resize

You want to make sure that you are resized the space FOLLOWING the XP partition. Once you have entered the amount you want to resize the space FOLLOWING the parition hit enter and then click the Resize/Move button.
Step Four
The next step is to click the Apply button. Once you click this button the resizing will take place. Depending upon the size you have chosen to free up, this process might take some time.

Click Apply

Once the resizing has taken place you will notice the partition names will change.

A Resized partition

That’s it. click the Exit button (the red square at the top left) to shutdown GParted Live. Take the GParted Live CD out of the CD drive and let your machine reboot. Make sure XP will boot properly before you continue. Once you are sure XP will boot properly, reboot with your Linux distribution CD in the drive and install Linux.
You can follow my Illustrated Guide to Installing Ubuntu Linux for a simple Linux install how to. Another article to read, that will get you up to speed on dual booting, is my How To Dual Boot Windows Vista and Linux.
Final Thoughts
Dual booting XP and Linux doesn’t have to be difficult. Using GParted Live CD will make this task far simpler than you thought it could be. But do remember, BACK UP THAT DATA

Read More

Web Proxies

In computer networks, a proxy server is a server (a computer system or an application program) which services the requests of its clients by forwarding requests to other servers. A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource, available from a different server. The proxy server provides the resource by connecting to the specified server and requesting the service on behalf of the client.

A proxy server may optionally alter the client’s request or the server’s response, and sometimes it may serve the request without contacting the specified server. In this case, it would ‘cache’ the first request to the remote server, so it could save the information for later, and make everything as fast as possible.

A proxy server that passes all requests and replies unmodified is usually called a gateway or sometimes tunneling proxy.

A proxy server can be placed in the user’s local computer or at specific key points between the user and the destination servers or the Internet.

 

Caching proxy server

 

A proxy server can service requests without contacting the specified server, by retrieving content saved from a previous request, made by the same client or even other clients. This is called caching. Caching proxies keep local copies of frequently requested resources, allowing large organizations and Internet Service Providers to significantly reduce their upstream bandwidth usage and cost, while significantly increasing performance. There are well-defined rules for caching. Some poorly-implemented caching proxies have had downsides (e.g., an inability to use user authentication). Some problems are described in RFC 3143 (Known HTTP Proxy/Caching Problems).

 

Web proxy

 

Proxies that focus on WWW traffic are called web proxies. Many web proxies attempt to block offensive web content. Other web proxies reformat web pages for a specific purpose or audience (e.g., cell phones and PDAs)

Access control: Some proxy servers implement a logon requirement. In large organizations, authorized users must log on to gain access to the ‘WWW.’ . The organization can thereby track usage to individuals.

 

Anonymizing proxy server

 

A proxy server that removes identifying information from the client’s requests for the purpose of anonymity is called an anonymizing proxy server or anonymizer.

 

Transparent and non-transparent proxy server

 

The term “transparent proxy” is most often used incorrectly to mean “intercepting proxy” (because the client does not need to configure a proxy and cannot directly detect that its requests are being proxied).

However, RFC 2616 (Hypertext Transfer Protocol — HTTP/1.1) offers different definitions:

“A ‘transparent proxy’ is a proxy that does not modify the request or response beyond what is required for proxy authentication and identification.”

“A ‘non-transparent proxy’ is a proxy that modifies the request or response in order to provide some added service to the user agent, such as group annotation services, media type transformation, protocol reduction, or anonymity filtering.”

Read More

Web Proxies

In computer networks, a proxy server is a server (a computer system or an application program) which services the requests of its clients by forwarding requests to other servers. A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource, available from a different server. The proxy server provides the resource by connecting to the specified server and requesting the service on behalf of the client.

A proxy server may optionally alter the client’s request or the server’s response, and sometimes it may serve the request without contacting the specified server. In this case, it would ‘cache’ the first request to the remote server, so it could save the information for later, and make everything as fast as possible.

A proxy server that passes all requests and replies unmodified is usually called a gateway or sometimes tunneling proxy.

A proxy server can be placed in the user’s local computer or at specific key points between the user and the destination servers or the Internet.

 

Caching proxy server

 

A proxy server can service requests without contacting the specified server, by retrieving content saved from a previous request, made by the same client or even other clients. This is called caching. Caching proxies keep local copies of frequently requested resources, allowing large organizations and Internet Service Providers to significantly reduce their upstream bandwidth usage and cost, while significantly increasing performance. There are well-defined rules for caching. Some poorly-implemented caching proxies have had downsides (e.g., an inability to use user authentication). Some problems are described in RFC 3143 (Known HTTP Proxy/Caching Problems).

 

Web proxy

 

Proxies that focus on WWW traffic are called web proxies. Many web proxies attempt to block offensive web content. Other web proxies reformat web pages for a specific purpose or audience (e.g., cell phones and PDAs)

Access control: Some proxy servers implement a logon requirement. In large organizations, authorized users must log on to gain access to the ‘WWW.’ . The organization can thereby track usage to individuals.

 

Anonymizing proxy server

 

A proxy server that removes identifying information from the client’s requests for the purpose of anonymity is called an anonymizing proxy server or anonymizer.

 

Transparent and non-transparent proxy server

 

The term “transparent proxy” is most often used incorrectly to mean “intercepting proxy” (because the client does not need to configure a proxy and cannot directly detect that its requests are being proxied).

However, RFC 2616 (Hypertext Transfer Protocol — HTTP/1.1) offers different definitions:

“A ‘transparent proxy’ is a proxy that does not modify the request or response beyond what is required for proxy authentication and identification.”

“A ‘non-transparent proxy’ is a proxy that modifies the request or response in order to provide some added service to the user agent, such as group annotation services, media type transformation, protocol reduction, or anonymity filtering.”

Read More

Web Proxies

In computer networks, a proxy server is a server (a computer system or an application program) which services the requests of its clients by forwarding requests to other servers. A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource, available from a different server. The proxy server provides the resource by connecting to the specified server and requesting the service on behalf of the client.

A proxy server may optionally alter the client’s request or the server’s response, and sometimes it may serve the request without contacting the specified server. In this case, it would ‘cache’ the first request to the remote server, so it could save the information for later, and make everything as fast as possible.

A proxy server that passes all requests and replies unmodified is usually called a gateway or sometimes tunneling proxy.

A proxy server can be placed in the user’s local computer or at specific key points between the user and the destination servers or the Internet.

 

Caching proxy server

 

A proxy server can service requests without contacting the specified server, by retrieving content saved from a previous request, made by the same client or even other clients. This is called caching. Caching proxies keep local copies of frequently requested resources, allowing large organizations and Internet Service Providers to significantly reduce their upstream bandwidth usage and cost, while significantly increasing performance. There are well-defined rules for caching. Some poorly-implemented caching proxies have had downsides (e.g., an inability to use user authentication). Some problems are described in RFC 3143 (Known HTTP Proxy/Caching Problems).

 

Web proxy

 

Proxies that focus on WWW traffic are called web proxies. Many web proxies attempt to block offensive web content. Other web proxies reformat web pages for a specific purpose or audience (e.g., cell phones and PDAs)

Access control: Some proxy servers implement a logon requirement. In large organizations, authorized users must log on to gain access to the ‘WWW.’ . The organization can thereby track usage to individuals.

 

Anonymizing proxy server

 

A proxy server that removes identifying information from the client’s requests for the purpose of anonymity is called an anonymizing proxy server or anonymizer.

 

Transparent and non-transparent proxy server

 

The term “transparent proxy” is most often used incorrectly to mean “intercepting proxy” (because the client does not need to configure a proxy and cannot directly detect that its requests are being proxied).

However, RFC 2616 (Hypertext Transfer Protocol — HTTP/1.1) offers different definitions:

“A ‘transparent proxy’ is a proxy that does not modify the request or response beyond what is required for proxy authentication and identification.”

“A ‘non-transparent proxy’ is a proxy that modifies the request or response in order to provide some added service to the user agent, such as group annotation services, media type transformation, protocol reduction, or anonymity filtering.”

Read More