![]() Such a private proxy server will have a very low requirement in terms of CPU and memory, so it could be very cheap. Ideally setup your own private proxy server on some VPS provider.Turn off all advanced plugins like Flash and Java which could bypass your proxy settings and reveal your genuine address to the remote server (actually, I would recommend to turn them off in all cases as a sanity measure, but this is another subject).Obviously do not claim you are using one, so use an anonymous proxy.Now, the best ways to ensure that the fact you are using a proxy is not detected: You can find some more techniques on this interesting answer. There could still be some more advanced checking to be done on server-side like issuing a reverse lookup to get the DNS name associated to this source IP address to check if it corresponds to some well-known proxy services providers, but these may be heavier to put in place and be more error-prone than the X-Forwarded-For header or the known proxies IP lists. However the server will have no definitive way to tell whether it is an open poxy, that is to say a proxy usable by anyone for instance in order to remain anonymous, or a legitimate private proxy, like you could find in any corporate environment. If a server receives a lot of requests coming from the very same IP address, but showing each time different browsers and OSes, the chances that this IP address is a proxy are rather high. These headers contains a lot of information, like your browser type and version, and the OS you are using. Moreover, while the remote server does not know your IP which has been masqueraded by the proxy, all other headers composing your request generally remain untouched. If a server sees an incoming request originating from an IP address belonging to such lists, then he knows nearly for sure that this request went through a proxy. There are list of proxy servers available around the net.the remote site cannot know your actual IP address, it can still determine that you are using a proxy: However, while your anonymity remains preserved, i.e. ![]() ![]() The request therefore appears as originating from the proxy server itself, your own IP does not appear anywhere, thus preserving your anonymity. It is the very same software, however this time the proxy server has been configured in order to not add this header. Then you have what is called an anonymous proxy or anonymizer. This make it obviously easy for the server, not only to know that you are using a proxy, but also to know your actual IP address, effectively dropping your anonymity. A proxy will by default tell the destination the IP address of the original requester by adding a X-Forwarded-For HTTP header to the original HTTP request.
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