Win 7 for security, fire default is not ping and telnet, but we are in the LAN, many times the administrator needs to open these two to facilitate maintenance. Ping: Ping (Pack Internet Groper) is used to test whether the network connection arrives. Ping sends an ICMP (Internet Control Messages Protocol) protocol, echoes the request message to the destination and reports receipt of the desired ICMP echo reply. Once you know the principle, we can now open the corresponding settings of the firewall. Open Control Panel >> System Security >> Windows Firewall >> Advanced Settings >> Inbound Rules DX Lean Diet Forskolin
