Automated home encryption and noexec mount option

[Wilson]

I'm using Ubuntu 13.10 and the integrate home encription via pam and
eCryptfs.

For security reason I've mounted /home with the noexec mount option, but
that don't affect users with encrypted home (since it's mounted
separately at the user's login): how can I set the automatic mount and
add the "noexec" option?

I've googled a lot and searched the system for a config file or a script
to edit, but to no result, so asking here is my last resource.


Thanks very much in advance

Wilson