- Installpersonalfirewallsfortheclientmachines.Theverticallinesrepresentfirewallsconfigurations.Youcan'tjustsitbehindfirewalls.Youmayhavefirewallsblockingtheports.Filteringfirewallsaremoreorlesstransparenttotheuser.Newtechnologiesshouldprovidesafeandr...
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