How proxy servers work?

proxy site

Basic knowledge: How does a proxy server work for anonymization? 

A proxy server (proxy in German: “proxy”) works as an intermediary in a computer network. The proxy server accepts all requests from a client (e.g. a home computer) and forwards them bidirectional to a recipient (e.g. a website).

Receiver retains the true identity of the sender because it has communicates with the proxy server (which then forwards the data to the receiver).

What types of proxy servers are there?

Http proxy

An Http proxy server is used e.g. for anonymous surfing on the Internet. All data is sent from the web browser (e.g. Internet Explorer or Firefox) via the proxy server. Almost all modern browsers have the ability to set a proxy server.

It should be Note, however, that only the network requests of the browser via the proxy server run. All other Internet services, such as e-mail, Skype, etc., are not taken into account.

Anonymous Torrent Proxy

With a torrent proxy server, all data transfers can be anonymized within the Bit torrent network. Due to the legal dangers of copyright infringement, anonymous torrent proxy servers are most located in countries where there are no data retention laws (e.g. Sweden, Canada or the Netherlands a good example of a foreign provider specializing in anonymous torrents is to guard.

VPN Server (Virtual Private Network)

Probably the most popular form of proxy server is the VPN server. This not only forwards parts of a network (like the HTTP proxy), but also the entire network itself.

Here, the network is transformed into a tunnel (so-called VPN tunnel), which forwards the entire network communication to the VPN server. This VPN tunnel is encrypted in most cases and thus offers a so-called end-to-end encryption.

Almost all modern operating systems already support the VPN protocol by default (Windows Vista) / 7/8, OSX, Linux) and make it easy for the user to set up a VPN connection. A good example of a VPN anonymization service is IP Vanish,

Speed ​​of proxysite servers

The speed at which the data passes through the proxy server depends on several factors.

  • The own bandwidth (depending on the internet connection)
  • The bandwidth of the proxy server provided to you
  • The number of concurrent users of the proxy server
  • The current time of day (affects the entire network worldwide)

The geographical location of the server today almost exclusively affects the latency, rather than the data transfer speed achieved. Proxy servers that charge no fees are, according to experience, slower than paid premium offers, since often too many users use the same service at the same time.

How do I find the right proxy server?

First of all, you should know for which Internet services you want to use a proxy server. To surf anonymously, an Http proxy might enough.

If you want to completely hide your data traffic, even from your own Internet provider, it is recommended to use a VPN server. Due to the local legal situation, a German provider cannot guarantee you complete anonymity.

We recommend proxy services from countries that have a more liberal legal system, such as Sweden, Canada, the Netherlands or Romania, when looking for the right service. For a list of what we believe to be the best foreign VPN servers, click here.

How does a vacuum cleaner work?

vacuum cleaner

What is the vacuum cleaner functionality?

Usually the editors of Kobold Erlebniswelt are dealing with difficult challenges at home.

Today we ask ourselves a very simple question:

How does a vacuum cleaner work?

The heart of this vacuum cleaner says, “round the round thing back and forth, meaning centrifugal engine, small and weighing only 500 grams But that super powerful!

The engine of the Best Buy Vacuum Cleaners is driving a blower, a kind of impeller looks like a song, this blower can turn at incredible speed, thousands of times per minute, creating super-fast return air, so air is being absorbed and all dust and dirt with it.

There’s a mouthpiece on the front of the vacuum cleaners. “It’s getting closer to the air as far as possible, for example on carpets, working on the development of electric vacuum cleaners. He has been working for a large company in Wuppertal for many years.

The vacuum cleaner makes a lot of noise. This is mainly due to the blower and because it returns very quickly.

Since we only got a few crumbs. The cracks are really nice when you are really absorbed. The crooks are thrown against the suction pipe, revealing the expert.

The suction pipe leads to the dust bag from the nozzle, the bags are all the sod and the balls. Previously, the bags were still made of paper, made of a special fabric today, and made up of a few cats. The dirt remains inside.

As the dirt stays in the bag, the air continues to spray from the vacuum cleaner.

The tank is drawn by the blower, so it is protected and non-fouling, with a filter in front of it. The sample is still picking up super small particles in the air.

Filters should ensure that the air is removed as cleanly as possible from the electric vacuum. This is especially important for people with allergies.

What Are The Attributes Of The Best Food Processor?

food processor

Food Processor Functionality

The food processor is a kitchen appliance, similar to a blender, except that it uses a replaceable blade and uses a larger and shorter bowl.

There are more optional blades to handle solid semi-solid foods and vegetables that can be processed into a variety of desired shapes, usually in the form of flakes, strips, blocks, gels, doughs, and the like.

And the agitator is that it does not require a certain amount of water or other liquid during operation, and does not require or require a little water or other liquid, you can get more information’s by Food Processors Reviews sites.

Uses: Can be used to treat a variety of vegetables, such as slicing, shredding, dicing, cutting, etc.; can also be used to grind some nuts, meat, dried fruit; can also be used to grind cheese or vegetables; For kneading and so on.

History Of The Food Processor

The idea of ​​using machines to process food was conceived by Pierre Verdan, a salesman at a French kitchen appliance company, when he noticed from his clients that the staff in the kitchen spent a lot of time cutting vegetables, cutting meat, and chopping.

In the work of dishes, meat, etc., he came up with a very simple but very efficient method, which is to install a blade that can be rotated continuously on a workbench, and put a bowl underneath to take the processed.

The prototype of the device evolved into Robot Coupe in 1960, a company that produces kitchen utensils created the first true food processor, and then the food processor was driven by cultural induction motors until 1972.

How Do I Calculate The Quantity For Feeding My Dog?

dog feeding plan

How Much To Feed The Dog?

General calculation of the BARF daily amount for a dog

Puppies and young German Long haired Pointer dogs

4-6% of body weight = daily amount (depending on the activity of the puppy)

Puppy 2 – 6 months old – 5-6% of body weight

Young dog 7 -9 months old – 4-5% of body weight

Young dog 10 – 13 months old – 3-4% of body weight

(In small breeds maybe a little less)

Calcium is very important

Requirement in the growth: about 100mg calcium / kg body weight for bone formation

Up to about 200mg calcium / kg body weight in the teeth change

Calcium intake can be achieved either by feeding chicken necks or similar. Be covered, or one feeds such as eggshell powder or similar. (See bones & cartilage for exact calculation)

From the end of the tooth change up to the age of about 1 year, the amount for the adult dog is then fed. For very large dogs, whose growth phase is longer, the amount for the adult dog is to be fed accordingly later.

Feed amount per day for adult dogs:

2% of body weight – dog must lose weight or keep his weight

2.5% of body weight – at ideal weight

3 -4% of body weight – very active or needs to increase

Calcium requirement: 50 – 80mg calcium per kg body weight per day (calculation see here)

This calculation is just a guideline. Always pay attention to the weight, age and activity of the dog.

If one notices that the dog has too little on the ribs, one feeds something more and vice versa, if the dog has too much weight, one feeds a little less and so on. Underweight is also recommended to increase the fat portion of the meal or boiled carbohydrates to feed.

The advantage of the BARF is that feeding can be individually adapted to each dog.

Daily feed amount = 100%

Of which are from 70 to 80% Animal

I.e. 100% meat again divided into = 60% lean meat – 20% rumen / omasum – 10% offal – 10% RFK

If no bones are fed, the muscle meat percentage increases.

And 20-30% vegetable

So 100% vegetable portion divided into 80% vegetables and 20% fruit possibly also cereals or carbohydrates (40% max)

The dog needs about 0.3g of oil per kg of body weight daily to meet its essential fatty acid requirement. (1 teaspoon are approx. 3-4g and a 1 tbsp. approx. 10-12g oil)

This would be summarized, for example, at a ratio of 70% to 30% for a 20kg dog at 2.5% of body weight;

195 g muscle meat

+ 70g rumen / leafy stomach

+ 35g offal

+ RFK according to calcium requirement (guideline value 10%)

+ 120g vegetables

+ 30g of fruit

= 500g daily feed + 6g oil

The daily amount can you then e.g. with two meals a day simply divide by two.

Tip for Beginners:

The best way to calculate the need for a week and distributed accordingly to the components of the week and the respective meals and thus creates a feed plan. Because you do not have to feed innards and bones every day, it’s enough if there are 2- 3 times a week. The same goes for rumen, you can easily install 1-2 rumen days.

Here You Can Look At An Example Of Feeding Plan.

Finally, the food is supplemented with various dietary supplements as needed. Because without these dietary supplements it is not possible to meet the need for minerals, trace elements and vitamins of a dog.

An Introduction About Reverse Proxy Functionality

reverse proxy functionality

Reverse Proxy Functionality

It is an important element of application infrastructures, providing an additional layer of security for protecting application servers.

Reverse proxies are used to deploy applications outside the protected internal network zones, and they retrieve the requested information from the server as a proxy for access from these unprotected areas.

Load Balancers and Application Delivery Controllers are typically used to increase the availability of server applications. Due to their core functions, they are by definition always reverse proxy servers, and are therefore often used for both roles – load balancing and reverse proxy.

In most cases, Internet clients are with the reverse proxy server, which “hides” the actual application servers, such significant reducing potential attack scenarios on the application.

It becomes clear that a reverse proxy site server plays a key role in the data exchange between client and server – if it fails, access to the large number of published services and applications is no later possible. High Availability” (HA) mode.

SSL acceleration streamlines application delivery by shifting performance-hungry SSL processing (handshaking, key exchange, session setup, decryption, and encryption) from the application server to the reserve proxy / load balancer.

They are specialized in this, and at the same time more powerful than the application server – which in turn has more resources available for their actual tasks.

This provides optimized performance for many applications such as CRM, messaging systems such as Exchange, Unified Communication, Extranet, Industrial applications, etc.

Fast data delivery is achieved while increasing security levels – helping to prevent potential attack scenarios. SSL acceleration can also be supported with special hardware (ASICs) or specialized software.

Content caching is also an important feature of reverse practice or load balancers that increase application performance: static elements of the application, such as time-consuming login pages, are cached, which reduces the number of accesses to the application servers in the backend.

Reduce the load on the application servers, which in turn can respond to new requests faster and with shorter response times.

What Is Visual Impairment?

visual impairment

Definition Of Visual Impairment / Blindness

The first possible is between correct corrective and non-correctable visual impairments. The correctable farsightedness, myopia – can be largely repaired with glasses or contact lenses.

Non-correctable visual damage is usually congenital or caused by an accident and affects disorders in the optic nerve, the present invention is a visually impaired student.

And the visually impaired people still wear glasses, suggesting a combination of correctable and non-correctable visual impairments. Despite his or her glasses, can only achieve visual acuity values ​​such as described below.

As visually impaired applies, who is not achieved despite normal correction and its visual acuity in the distance and / or near to 1/3 (30%) to 1/20 (5%) is reduced to the standard (100%).

This means that a visually impaired person with 1/20 eyesight can detect what a normal sight sees from a distance of 20 feet from a distance of 20 feet.

Those with a high degree of vision impairment are those who have a reduction from 1/20 (5%) to 1/50 (2%) of the standard (100%). These values ​​cannot be improved with glasses or contact Lens.

Blindness is when the eyesight is so greatly reduced that the affected cannot behave like sighted even after optical correction. Students who have to expect blindness are to be treated in in terms of special educational needs.

Every person with visual impairment has a different severity of visual impairment.

It is very important, especially in the school sector, to examine the individual viewing behavior of the individual student under everyday conditions – lighting conditions in the classroom, distances from the board, etc.

For example, a significant difference can be observed between near vision and long range vision.

The visual performance is influenced by the physical and mental state of the individual, by the time of day, by brightness, contrast, color and much more

What the visually impaired can see depends not only on medically measurable values; Factors such as education, experience, intelligence, and motivation can affect vision.

Due to these factors, the visually impaired person can more or less compensate for Hyperopia Definition Or Longsightedness or visual impairment.

In order to be able to determine all these values ​​and prerequisites, in the case of visually impaired pupils – in addition to the important medical test at the ophthalmologist –

A test is carried out on the functional vision of the pupil at school or at the visually impaired pedagogue determines the sight, as it is used individually in everyday life, through observations and with various eye tests.