On 04/06/15 18:34, German wrote:
Ok, how is that possible to detect the proxy?
People maintain lists of known proxy servers, and some proxy server software probably has a detectable "fingerprint".
And Tor is some sort of software you can use from linux?
Tor is a (quite famous - it even gets mentioned in the newspapers from time to time!) distributed anonymizer project. Its official site is easily found via the Internet search engine of your choice.