You're already using open source security

Open source security is already in data centers, even if network executives think it isn't. One common example is OpenSSL, an open source-library implementation of the SSL encryption standard with an accompanying set of tools and utilities. Any commercial product that uses SSL for such features as Web-based management or client/server control channels almost certainly is using OpenSSL. With no reason to believe that they could write better or more bug-free code, commercial developers naturally gravitate to reusable, open source components wherever possible.

You're already using open source security.