How does Google know I am behind a SOCKS proxy?

2

Setup: Ubuntu Desktop, Firefox without Flash or Java, using Socks 5 proxy, wired connection, all history/cookies cleared.

All other websites, including IP and location detecting sites like simplesniff.com and whatismyipaddress.com see me as coming from the proxy IP. If I use a Canadian IP for my SOCKS 5 proxy, a lot of sites will offer me the .ca version. Somehow Google still knows where I am. When I go to news.google.com it shows me local news and local weather for my real location, not my proxy IP.

How could they be getting this information?

Chris

Posted 2015-01-29T21:35:02.260

Reputation: 21

1

Is your proxy adding the X-Forwarded-For header?

– heavyd – 2015-01-29T21:36:33.820

Have you deleted Flash cookies, too? See http://www.techrepublic.com/blog/it-security/flash-cookies-whats-new-with-online-privacy/

– DrMoishe Pippik – 2015-01-29T21:54:20.173

Sorry if this is a dumb question, but are you signed into Google? – Aron Foster – 2015-01-29T22:16:02.227

1If you search for "what is my ip" on Google, the search engine itself should tell you what it thinks your IP is. If it's really your IP, then you've probably set up your proxy incorrectly, in which case you should post screenshots of what your network settings are. – jjlin – 2015-01-29T23:00:45.400

Are your DNS lookups going through the proxy? Google serves different DNS results for different locations, and the DNS results are part of how they choose which country's version to show you. – Moshe Katz – 2015-02-02T20:44:00.963

1Is HTTPS traffic going through your proxy? Some proxies only do non-secure traffic. – Moshe Katz – 2015-02-02T20:46:39.487

No answers