NFS versions, other vendors' support of secure RPC/NFS

[Preston Mullen]

Is secure RPC/NFS included in the NFS that Sun licenses to other
vendors?  E.g., if a vendor claims to support "NFS version 4",
does that imply support of secure RPC/NFS?  How are NFS versions
numbered anyway?

Either way, are there any other vendors (besides Solbourne) that
support secure RPC/NFS?

Thanks.

	Preston Mullen
	Naval Research Laboratory