Reference Manual for the ProSafe VPN Firewall FVS318v3
Advanced Virtual Private Networking 6-13
January 2005

Using Digital Certificates for IKE Auto-Policy Authentication

Digital certificates are strings gene rated using encryption and authentication schemes that cannot
be duplicated by anyone without access to the different values used in the production of the string.
They are issued by Certification Authorities (CAs) to authenticate a person or a workstation
uniquely. The CAs are authorized to issue these certificates by Policy Certification Authorities
(PCAs), who are in turn certified by the Internet Policy Registration Authority (IPRA). The
FVS318v3 is able to use certificates to authenticate users at the end points during the IKE key
exchange process.
The certificates can be obtained from a certificate se rver that an organization might maintain
internally or from the established public CAs. The certificates are produced by providing the
particulars of the user being identified to the CA. The informat ion provided may include the user's
name, e-mail ID, and domain name.
Enable Authentication Use this check box to enable or disable ESP authentication for this VPN
policy.
Authentication Algorithm If you enable authentication, then use this menu to select the algorithm:
• MD5 — the default
• SHA1 — more secure
Key - In Enter the key.
• For MD5, the key should be 16 characters.
• For SHA-1, the key should be 20 characters.
Any value is acceptable, provided the remote VPN endpoint has the same
value in its Authentication Algorithm Key - Out field.
Key - Out Enter the key in the fields provided.
• For MD5, the key should be 16 characters.
• For SHA-1, the key should be 20 characters.
Any value is acceptable, provided the remote VPN endpoint has the same
value in its Authentication Algorithm Key - In field.
NETBIOS Enable Check this if you wish NETBIOS traffic to be forwarded over the VPN
tunnel. The NETBIOS protocol is used by Microsoft Networking for such
features as Network Neighborhood.
Table 6-1. VPN Manual Policy Configuration Fields
Field Description