How do I share directories using NFS between Fedora Core and non-SELinux systems?
Just as NFS transparently supports many file system types, it can be used to share directories between SELinux and non-SELinux systems. When you mount a non-SELinux file system via NFS, by default SELinux treats all the files in the share as having a context of nfs_t. You can override the default context by setting it manually, using the context= option.