strongSwan

h1. Windows Suite B Support

Windows Vista Service Pack 1, Windows Server 2008 and Windows 7 support the Suite B cryptographic algorithms for IPsec defined by "RFC 4869":http://tools.ietf.org/html/rfc4869. For Windows configuration details see http://support.microsoft.com/kb/949856/.

The following command sets the IKEv1 main mode algorithms:

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

The currently configured algorithms can be checked using the command:

<pre>
netsh advfirewall show global

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

On the strongSwan side the following entries are required in ipsec.conf for the DH group 19 ECP_256

<pre>
ike=aes128-sha256-ecp256!
</pre>

or for the DH group 20 ECP_384

<pre>
ike=aes192-sha384-ecp384!
</pre>

<pre>
netsh advfirewall consec set rule name="VPN ECP" new qmsecmethods=esp:aesgcm192-aesgcm192,esp:aesgcm128-aesgcm128,esp:sha1-aes128
</pre>