Showing port Labels

[Dave Quigley <selinux@davequigley.com>]

I am working on some slides for my workshop at oscon and I tried to find 
the context of a port a process is listening on. If I do netstat -lZ I 
see all the listening ports and a security context. However, it seems 
the security context is the context of the process that is listening on 
that port not the context of the port itself. Is there a way to see the 
context of the port itself? I don't see any other option that might give 
that information. Is there a way to get that information from proc? Or 
are the only components that know the context of a port the kernel and 
the policy store?