No security professional in their right mind would consider embarking on installing wireless access points (APs) in the enterprise without making sure they had some form of protection.
One-factor authentication (user IDs and password) is still the most widely used method, primarily because it is simple, easy and there are no pieces of hardware to configure. But there are many applications where this is just not secure enough. In two-factor authentication, not only do users need to know a PIN but they also need to possess the correct token. This higher level of security, combined with the token's memory and cryptographic processing capabilities, makes it particularly attractive as a solution for many situations such as digitally signing documents and mails and authenticating the user remotely for access to corporate networks through VPNs.
The Instant Virtual Extranet (IVE) Access 3000 from Neoteris is a hardware/software hybrid SSL VPN appliance that offers users access to network resources securely. These resources also encompass web-enabled applications and email software (Lotus Notes and Microsoft Exchange), as well as Unix file shares.