Private Ip addresses are the blocks of IP addresses that are set aside
for use on private networks. These ip addresses are not accessible on
the global internet, therefore they can be used by any number of
organizations without conflicting with the general internet. By using
network address translation, workstations using any number of these
"private" ip addresses may share the same "public" ip address. Since
each public ip address can only be assigned to a single entity at any
given time, the private ip spaces were set aside for this purpose.
The ranges of these addresses are defined by what is known as "RFC
1918", and are as follows:
the $ at the end of a windows share indicates that it is not normally
shown to clients when browsing the shares on their computers. In order
to access such a share, a user must know about it ahead of time and
type it in as such:
This is an addded security feature to disuade the casual observer,
however there are programs such as cain and abel (www.oxid.it) and
X-scan that can find out exactly what shares are available regardless
of $ protection.
As for the default C$ shares, there are shares that windows makes
automatically for each drive on the computer. In order to access these
shares, one must normally log on to the computer with an account that
has administrative priveleges. I came accross one computer network
where no password was needed, however, this was probably because the
administrative password was blank or the "anonymous" user had
administrative priveleges. If neither of these are the case with your
computers, then only users with administrative priveleges on your
computer will be able to access these default shares.
I trust this adaquately answers your question and I hope you found
this information satisfactory.
"private ip space"
"hidden windows shares"