Depends on the BSD...  FreeBSD probably has binary packages that will update
the base system.  OpenBSD has source patches that you can apply to the
/usr/src
directory and rebuild your system with.  I'm not sure about NetBSD.  You
could
probably grab just the directory of the ports package that you want to
update,
but no there is no differentiation between normal updates and security
updates
in ports afaik.  Just do a cvsup -L2 -g ~/ports-supfile (assuming you've
setup
that file correctly).  Also, afaik, OpenBSD has bind4 built in, so if you're
using
that, you'll need to update your /usr/src tree.

Eden

From: "der.hans" <PLUGd@LuftHans.com>
| CAn the /ports stuff in *BSD differentiate between security updates and
| non-security updates?