Reading Time: 1 minute In vSphere 5, for the first time, ESXi has now an integrated firewall. In this way another feature gap between ESXi and ESX has been filled. But this firewall is quite new and different compared to the one from ESX, although the management (at the GUI mode) remain similar of the old one. For more info see: http://vinfrastructure.it/vdesign/esxi-5-firewall/