Configuring the Efficient VPN Server

Context

Parameters on the Efficient VPN server include network resource parameters and IPSec parameters:

Network resource parameters include the IP address, domain name, DNS server address, and WINS server address. The Efficient VPN server can deliver network resource parameters to the remote device over the IPSec tunnel.

An SA must be set up through an IPSec policy template. There are limitations on other IPSec parameters. Table 1 lists restrictions on some IPSec parameters supported on the switch.

**Table 1** IPSec parameters supported on the switch
IPSec Parameter	Description
Identity authentication method	Pre-shared key authentication
Security protocol	ESP
Encapsulation mode	Tunnel mode
Negotiation mode in IKEv1 phase 1	Aggressive mode
IKE authentication algorithm	SHA2-256, SHA2-384, and SHA2-512
IKE encryption algorithm	3DES, AES-128, AES-192, and AES-256
IKEv2 integrity check algorithm	AES-XCBC-96, HMAC-MD5-96, HMAC-SHA1-96, HMAC-SHA2-256, HMAC-SHA2-384, and HMAC-SHA2-512
IKEv2 PRF algorithm	AES-XCBC-128, HMAC-MD5, HMAC-SHA1, HMAC-SHA2-256, HMAC-SHA2-384, and HMAC-SHA2-512
DH algorithm	group21, group20, group19, group14
IPSec authentication algorithm	SHA2-256, SHA2-384, and SHA2-512
IPSec encryption algorithm	3DES, AES-128, AES-192, and AES-256

The switch cannot function as the Efficient VPN server. For detailed configurations of the Efficient VPN server, see the configuration guide from the corresponding vendor. The detailed configuration procedure is as follows:

Configure network resource parameters to be pushed to the remote end.
Define data flows to be encrypted for protection.
Configure an IKE proposal to define the identity authentication method, authentication/encryption algorithm, and DH algorithm.
Configure an IKE peer to reference the IKE proposal and configure parameters, such as the pre-shared key, IKE version, and remote address.
Configure an IPSec proposal and define the security protocol, authentication/encryption algorithm, and encapsulation mode.
Configure an IPSec policy and apply the ACLs and IPSec proposal to the IPSec policy.
Apply the IPSec policy to an interface.