Restrict Commit Files Types

Dears,

I am running SVN with svnserve, and I am considering the approaches for
setting up the restriction of committing a file.
In my own experience, by setting up the properties of svn:ignore and the
global-ignore in .subversion can achieve to goal in the way by setting up
the ignore list.
But it seems the ignore list resides in client side, that means user can
modify the list and so as the properties to again commit the files that are
set ignore before.

I would like to ask is there any way to set the ignore list on the server
side? and some other related but indirect way to set the list that can
restrict user to not commit certain files.

Thank you very much and I am looking forward to your reply.

-- 
Yours Sincerely,
Jacky Chan