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I'm currently browsing through a local transparent proxy.

I'm receiving 404 responses from a couple of web hosts, although the proxy works perfectly with everything else; I was wondering whether it could be the websites recognizing and blocking the proxy user.

Is this a possibility or is there something wrong with the proxy?

closed as off-topic by dan Jul 10 '14 at 5:04

  • This question does not appear to be about webmastering within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

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    Big subject, see: sans.org/reading-room/whitepapers/detection/… – Simon Hayter Jul 5 '14 at 14:12
  • It is possible to block known proxies using a black-list at various levels including some web-servers. However, open proxies come and go by the minute. There are servers that test for various proxies as part of unnamed hush-hush security apparatus(s) and that data does get into the black-lists relatively quickly. – closetnoc Jul 5 '14 at 14:56
  • Unfortunately, this question doesn't appear to be about a website under your control, and is also fairly broad. – dan Jul 10 '14 at 5:04

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