Windows Suite B Support¶

Windows Vista Service Pack 1, Windows Server 2008 and Windows 7 support the cryptographic algorithms for IPsec defined by Suite B. For details see http://support.microsoft.com/kb/949856/.

The following command sets the IKEv1 main mode algorithms:

netsh advfirewall set global mainmode mmsecmethods ecdhp256:aes128-sha256,ecdhp384:aes192-sha384,dhgroup14:aes128-sha1

The currently configured algorithms can be checked using the command:

netsh advfirewall show global

Main Mode:
KeyLifetime  480min,0sess
SecMethods   ECDHP256-AES128-SHA256,ECDHP384-AES192-SHA384,DHGroup14-AES128-SHA1
ForceDH      No