Custom point-to-point tunnel protocol

[Gerry Weaver]

Hello All,
 
I need to create a secure point-to-point tunnel protocol for a project that I'm working on. I have several questions related to the security aspect of that protocol. I'm looking for a place or resource where I can ask those type of questions. Could anyone please recommend a good mailing list or other resource for this kind of thing? I've checked this out on Google, but I haven't been able to find exactly what I'm looking for.
 
Thanks,
-G