2. Enable authentication methods for IKEv2 clients:
(host)(config) #crypto isakmp eap-passthrough {eap-mschapv2|eap-peap|eap-tls}
3. Create addresspools:
(host)(config) #ip local pool <pool> <start-ipaddr> <end-ipaddr>
4. Configuresource NAT
(host)(config) #ip access-list session srcnat user any any src-nat pool <pool> position 1
5. If you are configuring a VPN to support machine authentication using certificates, define server certificates for
VPN clients using IKEv2.
(host)(config) #crypto-local isakmp server-certificate <cert>
6. Define IKEv2 Policies:
(host)(config) #crypto isakmp policy <priority>
encryption {3des|aes128|aes192|aes256|des}
version v2
authentication {pre-share|rsa-sig|ecdsa-256ecdsa-384}
group {1|2|19|20}
hash {md5|sha|sha1-96|sha2-256-128|sha2-384-192}
prf PRF-HMAC-MD5|PRF-HMAC-SHA1|PRF-HMAC-SHA256|PRF-HMAC-SHA384
lifetime <seconds>
7. Define IPsec Tunnel parameters
(host)(config) #crypto ipsec
mtu <max-mtu>
transform-set <transform-set-name> esp-3des|esp-aes128|esp-aes128-gcm|esp-aes192|esp-
aes256|esp-aes256-gcm|esp-des esp-md5-hmac|esp-null-mac|esp-sha-hmac
Configuring a VPN f or Smart Card Clients
This section describes how to c onfigurea remote access VPNon the controller for Microsoft L2TP/IP sec clients
with smart cards.(A smart card contains a digital certificate which allows user-levelauthentication without the user
enteringa username and password.) As described previously in this chapter, L2TP/IP sec requirest wo levels of
authentication: first, IKE SA (machine) authentication, and then user-level authentication with an IKEv2 or P PP-
based authentication protocol.
Microsoft clients runningWindows 7 (or later versions) support both IKEv1 and IKEv2. Microsoft clients using
IKEv2 support machine authentication using RSA certificates (but not ECDSA certificates or pre-sharedkeys) and
smart card user-levelauthentication wit h EAP-TLS over IKEv2.
NOTE:Wi ndows 7 clients without smart cards also support user password authentication using EAP-MSCHAPv2 or PEAP-
MSCHAPv2.

Working w ith Smart Card c lients using IKEv2

To configure a VPN for Windows 7 clients using smart c ardsand I KEv2, follow the procedure described in
"Configuringa VP N for L2TP/IPsec with I KEv2 in the WebUI" on page 279, and ensure that the following settings
are configured
lL2TP is enabled.
lUser Authentication is set to EAP-TLS.
lIKE version is set t o V2
lThe IKE policy is co nfiguredfor ECDSA or RSA certificate authentication.
DellPowerConnect W- Series ArubaOS 6.2 | UserGuide VirtualPrivate Networks | 283