HTTP Authentication and Proxy Configurations

HTTP Authentication Since the reverse proxy server masquerades as a Web server, the authentication required by the reverse proxy is Web server authentication. That is, the challenge status code is 401, not 407. See elsewhere in this blog for HTTP authentication, and differences between Web server and proxy server authentication.

Dynamic Content and Reverse Proxying

Dynamic content poses a problem With reverse proxies. If the content is dynamically generated, it cannot be cached efficiently. Rather, each request must be forwarded to the origin server. This defeats the benefits of caching in the proxy server, and may in fact impede performance. A common misconception relates to the way CGI scripts are handled. CGI scripts are always executed by the origin server; they are never trans- ferred in their source code/program language form to the proxy server and executed there. Only the result of the CGI execution is passed to the proxy server, and, if marked cacheable, it may be cached by the proxy. As long as the number of dynamic pages is fairly small compared to the total number of requests, reverse proxying can be beneficial as in this case – http://bbciplayerabroad.co.uk/how-to-watch-bbc-iplayer-in-the-usa/. If there are many dynamic pages, they may be duplicated on multiple origin servers, and DNS round robin used to distribute the load among them. The static content may still be handled by reverse proxy servers.

Alternatives to Using Reverse Proxies:

There are a couple of alternatives to reverse proxies. One is the 3 05 Use Proxy status code in HTTP/ 1.1 that is intended for redirecting the client [or an intermediate (forward) proxy] that directly connects to the origin server to go through a proxy server. This releases the proxy in question from having to be a reverse proxy, since the client is now aware of the proxy’s existence in between. The 305 status code is intended as a mechanism for associating a one-site—only proxy server that will not be used for anything else. Note that if a (forward) proxy server is already used by the client, the client will not receive the 305 response. Instead, it is intercepted and handled by the last (forward) proxy in the proxy chain (that’s the proxy that attempted a direct connection to the origin server to begin with).

At the time of this writing, the support for the 305 status code is not widespread, either by client software or proxy servers. Once HTTP/1 becomes more widespread, the use of 305 proxy redirection may be viable option to reverse proxying. Another alternative to reverse proxying is to handle replication ~ ‘ server content by other means.

This can be accomplished by a plugin, the Web server, or by copying content between servers by other too such as FTP or secure rdist. At this time, copying content between servers using out-of-band mechanisms is the most common way of ting up large server pools. As reverse proxy server technology advance» may become an easier mechanism for setting up server pools. SUMMARY Reverse proxying provides an alternative to moving the server from ‘ internal network to the firewall. As the performance of proxy server \ ” ware increases, they may become a viable solution for synchronizing among multiple replicated servers in a large origin server pool.

Source: Guidance on Find a Fast UK Proxy

Using Your VPN – Apprendre le Français

You might think that VPNs and proxies are just technical tools only useful for geeks and nerds, but that’s not quite the truth.  Well it’s partly true but the reality is that a VPN offers something much more than an encrypted connection between two computers.

Although initially the original and primary reason for a VPN to be used is security nowadays it has arguably a  more important role – to bypass blocks and filters.  You see every single one of us has access to a ‘restricted’ version of the internet.  Not one of us has equal access to each other when we’re online.  We all use a regionalised version of the internet where some sites are blocked or filtered depending on our locations.

Of course, the extent of these filters varies greatly depending on your location. It’s fair to say that European access is way more extensive than connecting from Thailand , China or Turkey for example.   Most countries operate some sort of restrictions, in most democratic nations it normally revolves around criminals sites.  However other countries will extend these blocks to include all sorts of political, religious and moral restrictions, for example many gay rights and atheist sites are inaccessible online from Turkey.

A VPN offers the potential to bypass all these blocks and filters with relative ease and you can decide what content you are able to access irrespective of your location.  The reason this works is that the VPN stops most content filtering methods from working.   There’s another sector of websites that restrict access but these are generally down to copyright or licensing issues.  Most large media sites operate these blocking access from countries outside their domestic market.

Which means that many of the best, most informative and interesting sites are restricted to the location they are based in.  Sounds crazy doesn’t it – a global network like the internet slowly being segmented and filtered.  However not if you have a VPN, all these sites can be available irrespective of your location.

Let’s take an example, perhaps you’re learning French but because you’re based in the USA.  Lots of the French and Canadian French TV and educational sites are inaccessible from a US IP address.  Same goes for other media sites in different countries, your access is only not restricted to sites based in the USA.  However the VPN opens up that access, so you can watch online TV stations in France like M6 Replay or indeed any sites from anywhere – such as BBC iPlayer France!

So studying French, want to practice your vocabulary by watching The Simpsons dubbed into French – then make sure you connect to a VPN server based in France.  Want to try out the BBC educational content and programmes switch it to a UK one and so one.

Further Information: Streaming UK TV 

Choosing a Smart DNS vs VPN Solution

One of the problems with using VPN services is that they are difficult to use with devices other than computers. It’s fairly simple to set up a VPN on a computer, laptop or even on tablets.
However nowadays people use things like Smart TVs and media streamers such as the Roku which are difficult to configure to use VPNs even those simpler ones. This configuration issue lies at the heart of the puzzle – which is the best Smart DNS Vs VPN.

Probably the most common uses for a flash router is to act like a VPN service gateway. As you can see from a fast glance from the many sites which deal with Flash Routers, most encourage using one of the many VPN services and are frequently adding new ones. Subscribing to the VPN service is an extremely beneficial way to get access to unblocked content, so if you’re attempting to see US Netflix in Mexico or see BBC Sport on your Roku, employing a subscription service like Identity Cloaker, IPVanish or similar with your router will definitely a fantastic option.

Nevertheless, a VPN service isn’t the only way to unblock popular streaming video & music content. While utilizing a VPN support with your router can permit you to unblock content on devices such as Roku and Apple Television that may Usually not be flashed for VPN usage, you will find other services that could be utilized. The most outstanding is the, easy Smart DNS. Should I Be Using A VPN service or a Smart DNS Router Setup? Smart DNS is a protocol which may be utilized to re route traffic required for determining your geographical location.

Nevertheless, unlike a VPN, Smart DNS doesn’t provide encryption or conceal your IP address. The VPN service creates a tube which change or mask your IP to do it look you’re accessing the website from another location. Smart DNS works like more of a trick, by changing your DNS so sites think you’re qualified to access their content. The reason why SmartD NS differs enormously from a VPN with a better user rate is that it doesn’t require traveling through a remote server location. So a Smart DNS router configuration gives you a number Of the benefits a VPN service may provide without the possible disadvantage of slower speeds from heavy VPNs encryption.

Using SmartDNS is really hard to beat for ease and setup, particularly when utilizing a router upgraded with increased DD WRT firmware. When this Smart DNS router setup is complete, all system that runs throughout The FlashRouter will be using SmartDNS. So with one setup, all devices device on your network like Roku 3, AppleTV, iPads, iPhones may All access SmartDNS enabled content with no person setup. One installment and you’re ready to go!.

Accessing Blocked Content in France

Like many websites particularly those in the media sector, the French TV site M6 Replay is only accessible from domestic connections.  If you access from inside France then you’ll have no problem at all but if you are in a different country and try to access M6 Replay then you’ll get blocked from most of the video streams.

These sites often block access or filter their content for a variety of reasons.  Much of it is to do with copyright issues, that their programmes are only licensed for a specific country or region.   Other reasons are usually focused on maximizing profit by selling broadcasting rights separately to other organisations or media companies.    If you access any media site in any country you’ll normally find that the functionality is restricted primarily to it’s home market.

The method for enforcing these restrictions are however usually very similar and involve determining the location of the connection.   This is normally done by looking up the IP address of the incoming connection and looking up the country of origin.   These can be determined from vast databases which map all registered IP addresses to their corresponding countries.  So a connection from Canada would be mapped to a Canadian IP address and so on.

This is the standard method for controlling, filtering and restricting access – often known as geotargeting or geoblocking.   It means that in order to bypass these blocks and gain access to these sites irrespective of your actual location then you need to gain some control of your IP address.    Unfortunately it’s not actually possible to change your address as this is allocated directly from the ISP where connect to the internet.  These are always locked to the specific country, so you’ll get the address based on the country you’re connecting from.

There is a method though which can unlock any website irrespective of your location – here’s a demonstration:

As you can see the way to bypass these checks is to hide your real IP address by using an intermediate server to route the connection. So to access the M6 Replay site from outside France you need to relay your connection through a French proxy server.

As long as the server is configured properly then the website will only see the IP address of the proxy server and not the actual client. Developments in this areas have included the use of VPN (Virtual private Networks) which are even more difficult to detect than proxies. Furthermore the VPN connection is encrypted so it’s more secure than using a simple proxy server.