Password protection

There are 4 machines wirelessly networked. My brother has 2 running Linux
and I have 2 running XP. He can easily restrict me from accessing his
machines but for the life of me I can't see how I can do the same in XP to
only allow my own 2 machines to access each other by password protection.

Can anybody help please?

--
Puzzled person

Hi
This two pages explain the level of permissions and how to set users in
Windows XP.
http://support.microsoft.com/default...b;en-us;304040
http://www.microsoft.com/technet/pro...lesharing.mspx
In addition if you have additional Software Firewall on each computer, you
can ban his IPs form accessing your computers.
Jack (MVP-Networking).

"Steve" <(E-Mail Removed).(nospam)> wrote in message
news:F9F265B7-D549-4251-9747-(E-Mail Removed)...
> There are 4 machines wirelessly networked. My brother has 2 running Linux
> and I have 2 running XP. He can easily restrict me from accessing his
> machines but for the life of me I can't see how I can do the same in XP to
> only allow my own 2 machines to access each other by password protection.
>
> Can anybody help please?
>
> --
> Puzzled person