hi i would like to disable the IRDP (ICMP Router Discovery Protocol) on my unit i tried to modifiy this key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters PerformRouterDiscovery - value does not exist to dword 0 without succes I need also to disable the IP Source Routing i'm on windows 7 64 bits hope you can help

Hi , Run the registry editor (regedit.exe) and browse to the following key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters Add a DWORD value named "PerformRouterDiscovery", and set it to 0. Windows must be rebooted for the change to take effect. Before modify the registry keys, please take a backup of the key. For more information about how to back up and restore the registry, please click the following link to view the article: Back up the registry http://windows.microsoft.com/en-us/windows7/Back-up-the-registry The following links for your reference: IRDP (ICMP Router Discovery Protocol) enabled http://www.rapid7.com/vulndb/lookup/generic-irdp-enabled Disable IP Source Routing in Windows Server 2008 & Windows Vista http://www.windowsreference.com/networking/disable-ip-source-routing-in-windows-server-2008-windows-vista/ Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.Tracy Cai TechNet Community Support

Hi , Run the registry editor (regedit.exe) and browse to the following key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters Add a DWORD value named "PerformRouterDiscovery", and set it to 0. Windows must be rebooted for the change to take effect. Before modify the registry keys, please take a backup of the key. For more information about how to back up and restore the registry, please click the following link to view the article: Back up the registry http://windows.microsoft.com/en-us/windows7/Back-up-the-registry The following links for your reference: IRDP (ICMP Router Discovery Protocol) enabled http://www.rapid7.com/vulndb/lookup/generic-irdp-enabled Disable IP Source Routing in Windows Server 2008 & Windows Vista http://www.windowsreference.com/networking/disable-ip-source-routing-in-windows-server-2008-windows-vista/ Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.Tracy Cai TechNet Community Support