Windows Suite B Support with IKEv1 » History » Version 5

Version 4 (Andreas Steffen, 11.07.2009 23:24) → Version 5/26 (Andreas Steffen, 11.07.2009 23:29)

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": For Windows configuration details see

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

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


or for the DH group 20 ECP_384


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

netsh advfirewall consec show rule name="VPN ECP"

Rule Name: VPN ECP
Enabled: Yes
Profiles: Domain,Private,Public
Type: Static
Mode: Tunnel
LocalTunnelEndpoint: Any
Protocol: Any
Action: RequireInRequireOut
Auth1: ComputerCert
Auth1CAName: C=CH, O=strongSwan Project, CN=strongSwan 2009 CA
Auth1CertMapping: No
Auth1ExcludeCAName: No
Auth1CertType: Root
Auth1HealthCert: No
MainModeSecMethods: ECDHP256-AES128-SHA256,ECDHP384-AES192-SHA384,DHGroup14-AES128-SHA1
QuickModeSecMethods: ESP:AESGCM192-AESGCM192+60min+100000kb,ESP:AESGCM128-AESGCM128+60min+100000kb,ESP:SHA1-AES128+60min+100000kb
ExemptIPsecProtectedConnections: No
ApplyAuthorization: No