User's Manual

Configuring Virtual Private Networks (VPNs) and Security
Configuring VPNs
Cisco RV 120W Administration Guide 107
5
•
AES-192
•
AES-256
STEP 2 Specify the authentication algorithm for the VPN header:
•
MD5
•
SHA-1
•
SHA2-256
•
SHA2-384
•
SHA2-512
NOTE Ensure that the authentication algorithm is configured identically on both
sides.
STEP 3 Choose the authentication method:
• Select P
Pre-Shared Key
for a simple password based key that is shared with
the IKE peer.
• Selecting
RSA-Signature
disables the pre-shared key text box and uses the
Active Self Certificate uploaded in the Certificates page. In that case, a
certificate must be configured in order for RSA-Signature to work.
NOTE The double quote character (“) is not supported in the pre-shared key.
STEP 4 Choose the Diffie-Hellman (DH) Group algorithm, which is used when exchanging
keys. The DH Group sets the strength of the algorithm in bits.
NOTE Ensure that the DH Group is configured identically on both sides of the IKE
policy.
STEP 5 In the S
SA Lifetime
field, enter the interval, in seconds, after which the Security
Association becomes invalid.