In addition to security, companies considering using a WVPN should also ate performance, since, after all, most intra-day accesses will be time-critical for the end user.
So a WVPN should allow end users to control their own time online by letting them choose whether to review only e-mail headers, or headers and text messages, or headers, text messages, and attachments.
In response to these issues, new services are now available that merge the best of VPN and wireless technologies and can best be referred to as wireless VPNs, or WVPNs for short.
Finally, as with conventional VPNs, WVPNs should also offer a high degree of access control to restrict access to specific network services.
In the case of Exchange data streams, for example, which are highly compressible, WVPNs should be able to support compression ratios as high as three to one.