Summary

The capability to use a straightforward and robust method for securely accessing internal organization assets is one of the key selling points to ISA Server 2004. ISA's VPN capabilities are what make this type of access possible, offering multiple configuration methods with PPTP or L2TP protocol support available. In addition, ISA's Application-layer filtering support for VPN users, even after they have authenticated, further extends the security of remote user access. A properly designed VPN solution using ISA Server 2004 therefore extends the productivity of an environment without unnecessary security risks.