accessibility of two workgroup

we have a router that has 4 port. we put up a switch in port #1 and another
switch at port #2. We assigned different workgroup name in each port/switch.
the problem is that PC from workgroup 1 can access file from workgroup 2 and
vice versa. What can we do to prevent the sharing/accessing of files from
different workgroup?Thanks.

As you learned, workgroups do not separate networks. They are merely a
convenience for grouping resources for browsing and have no security
purpose. You can prevent access between these groups by using routers
rather than switches to create separate subnets. In your case, you could
replace one or both of the two switches with a router(s).
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"king" <(E-Mail Removed)> wrote in message
news:60A69FEC-D8A8-4DC2-BE8C-(E-Mail Removed)...
> we have a router that has 4 port. we put up a switch in port #1 and
> another
> switch at port #2. We assigned different workgroup name in each
> port/switch.
> the problem is that PC from workgroup 1 can access file from workgroup 2
> and
> vice versa. What can we do to prevent the sharing/accessing of files from
> different workgroup?Thanks.