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What is a proxy server?

means agent or deputy. A server can be a separate machine or a program or service on the machine, that is connected to the net. If you use a server, you do no longer use the Internet directly, but indirectly.

Instead of contacting remote servers directly, your request is submitted to the proxy. The proxy itself will make the request to the remote server, retrieve the result and pass it to you.

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What is internet anonymity?

As discussed in „Can somebody identify me„, there is usually no technical problem to identify someonre based on his IP address and the point in time it has been used. Practically there is seldom danger, as a ruling is required to resolve this.

But in times of more and more data collection, many feel the importance of .

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What is a web bug or web beacon?

Web bugs are pixels used for counting, that are placed in web pages or emails.

It is usually a transparent 1×1 pixel GIF image, but can in principle be any artwork, for example, advertising banner or logo of the visited page.
Purpose
Their purpose is to collect statistical information, for example:

  • How often a page is requested? As graphics, they allow a better distinction between man and machine than the usual log files on the server.
  • Which browser or operating system has been used? Further details regarding the user’s computer equipment can also be detected with the use of Javascript. Of interest for web designers are e.g. screen sizes and installed plugins. Insights are often used for the optimization of the website.

Problems
Generally there is no direct threat implied by these pixels because they are graphics.

Like cookies, however, they can also be misused to invade the of the visitor.

  • Embedded into emails they confirm the reading of the mail and thus the email without further user interaction.
  • Like banners also counting pixel can be used to set cookies and to recognize a visitor across multiple pages that are in the control of the same operator.
  • Because that on one side every graphic could be used as Web , and on the other side 1×1-pixel are used for layout, web bugs are harder to suppress than cookies.

Notes and Recommendations
Use an email client, where you can turn off the automatic loading of images. Download images only for mail from known senders.

Avoid the display of graphics in SPAM or other advertising, to not verify your address and reading the mail.

 
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Can somebody identify me?

Yes and No!
Yes
Technically this is possible. If you are on the Internet, you have an unique, public . This address is stored on every server you visit in the server log files. This leaves a trail in the network.

In addition to your IP address, other data is recorded, such as time of the request, the requested file, and also whether that could be delivered. (mehr …)

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What are dynamic and static IP addresses?

The difference lies in the validity of the addresses and how they are provided.
Static addresses
Static IP addresses are initially fixed and do not change. The are realized as follows: (mehr …)

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