Replication Limiting Subscribers

How can we limit the number of anonymous merge subscribtions to a
given publication? Can we limit it by machine MAC address?
(Bump!)
Guys I really need an answer to this question.
How can we limit the number of anonymous merge subscribtions to a
given publication (assuming i can have only one sql account per
publication and no NT authentication)?
The problem with giving a set of sql accounts is that they can be
reused.
Can we limit it by machine MAC address?
Thanks,
Hananiel
hananiel@.yahoo.com (Hananiel) wrote in message news:<e338e321.0410130607.37e214d5@.posting.google. com>...
> How can we limit the number of anonymous merge subscribtions to a
> given publication? Can we limit it by machine MAC address?