When I typed that address into windows explorer it opened Firefox and
gave me that page. I since went to synaptic and removed apache2. Now,
typing in that address still sends me to Firefox but I get an error page
saying that the page load was interrupted, the connection to the server
was reset..

And when I try smb://192.168.6.101 it says that I MAY NOT have
permissions set up right.

So, now, how do I check that I have the correct permissions set up on
the Linux machine?