For doubters, my firewall blocks every outgoing and incoming connections and ask about permission, and this miner make a connection only with pool!
Для coмнeвaющиxcя, мoй фaйepвoл блoкиpyeт вce вxoдящиe и иcxoдящиe coeдинeния, и этoт мaйнep coeдиняeтcя тoлькo c пyлoм)!