Enable windows routing function 1. windows NT: Enable Registry: regedit.exe and hit: HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ Tcpip \ Parameters. Add: Value Name: IpEnableRouterData Type: REG_DWORDValue: 1. Restart the machine. 2. windows xp, Vista, and windows 7: Open the Registry: regedit.exe and press HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ Tcpip \ Parameters to add: Value Name: IpEnableRouterData Type: REG_DWORDValue: 1. 3. Windows 7: Open Control Panel-> service: Call the "Routing and Remote Access" service. Start this service. In this case, you can use ipconfig/all to view ip routing. C: \ Users \ Administrator> ipconfig/all Windows IP configuration host name .............: k-PC primary DNS suffix ...........: node type ............: Hybrid IP routing is enabled ..........: The WINS proxy is enabled .........: No