Windows Tips

Error:    Secure VPN Connection terminated locally by the Client. Reason 442: Failed to enable Virtual Adapter. Connection terminated. This problem occurs due to a registry error in the installer. All you need to do is fix the following registry key: Open  regedit.exe , and go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CVirtA Edit the  DisplayName  value to remove the gibberish before "Cisco". The value by default will be something like: @oem18.inf,%CVirtA_Desc%;Cisco Systems VPN Adapter for 64-bit Windows Edit it to just say: Cisco Systems VPN Adapter for 64-bit Windows

This article explains how to use a free utility called iPerf to test the speed of a VPN connection. In this example I am running iPerf on windows but there are other versions available (i.e. Linux). Download iPerf from  http://linhost.info/2010/02/iperf-on-windows/ Put a copy on 2 computers with 1 either side of the VPN. In this example I have put in the c:\triangle folder On the “server” PC open a cmd prompt and navigate to the folder containing iperf. Note on computers running Win7 or Win2008 I recommend running the cmd prompt in elevated mode. Run the command  iperf –s On the “client” PC open a cmd prompt and again navigate to the folder containing iperf. Run the command  iperf –c After a short while the estimated bandwidth is displayed.