We continually are asked “Does your product work with VPN X?”. This is the wrong question. The right question is whether any product on your network supports the authentication protocol you have chosen as a standard. Once you decide on a standard, the world opens up to you. Specifically, the world of open source software. After briefly discussing authentication protocols I will demonstrate how easy it is to protect various software packages and remote access solutions with two-factor authentication, such as SSH, Apache, OpenVPN, FreeNX, etc. Many people are simply not aware of the open-source remote access solutions available and still more are not aware of how to integrate them into a network. This talk seeks to rectify that.