HOW TO SCAN/CRACK OVER A PROXY
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The environment variable HYDRA_PROXY_HTTP defines the web proxy (this works
just for the http/www service!).
The following syntax is valid:
  HYDRA_PROXY_HTTP="http://123.45.67.89:8080/"
For all other services, use the HYDRA_PROXY_CONNECT variable to scan/crack
via a web proxy's CONNECT call. It uses the same syntax. eg:
  HYDRA_PROXY_CONNECT=proxy.anonymizer.com:8000
If you require authentication for the proxy, use the HYDRA_PROXY_AUTH
environment variable:
  HYDRA_PROXY_AUTH="the_login:the_password"