Flutterby™! :

Bruce Schneier on SOAP security: Let's continue the DCOM example. So what if DCOM runs over a firewall? DCOM is Microsoft's main protocol for inter-application communication. It's not just used by programs that are intended to be servers; it's used for all sorts of desktop communication and remote access. The result is that an average machine has dozens of programs using DCOM. Mine shows 48, ranging from "Microsoft PowerPoint Presentation" to "logagent" and including the catchily named "{000C101C-0000-0000-C000-000000000046}"; you may be able to list yours by bringing up a Command Prompt and typing "dcomcnfg".