For example using different proxies on some services-sites.

Sometimes using e.g. tor, some connections change randomly.

For which time-frame are such servers avaiable if we pick up some of such addresses manually ?

  • Are you asking what is the time period between every random switch of servers in Tor dynamic browsing? – Bubble Hacker Nov 13 '16 at 20:49
  • For example on hidemyass freeproxylist, if you take an address from there. How to know if it's avaiable and how long. I took the example of tor, but maybe it's not the same. Thanks – Tech-IO Nov 13 '16 at 21:09
  • Well you can't know. It happens because the server administrators turn off the servers or all kinds of internal reasons. So knowing the exact time is not possible... – Bubble Hacker Nov 14 '16 at 8:10
  • Okey, thanks. Perhaps a ping or nc(for ports) would be enough to see if it's up or down. – Tech-IO Nov 14 '16 at 17:58
  • Yes, that is how they do it. – Bubble Hacker Nov 14 '16 at 18:00

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