Hardware Reference
In-Depth Information
FIGURE 9.7
Mac OS X parental controls
Linux, by default, doesn't have parental controls; it's an optional add-on package that
can be downloaded with Ubuntu and other Linux distributions.
In the Internet Explorer browser, you can also turn on the Content Advisor feature,
which limits the websites that can be displayed using Internet Explorer.
Network Control
Next we'll look at security risks and controls associated with connecting to a network.
Open Wireless Networks
As you learned in Chapter 3, wireless (Wi-Fi) networks can be either open (no encryption)
or secured (using encryption). Encryption is set at the router, so whether or not a network
has encryption on it is determined by the router settings. The router, in turn, connects its
users to the Internet.
If a network is secured, you must type its encryption key (password) when connecting
to it. If it's not, anyone may connect to it. However, connecting to a network may not
be suffi cient to gain access to all its services (such as Internet access). Additional login
information may be required. When you open a web browser window, a redirect operation
displays a login page in which you may need to accept a user agreement, enter a username
and password (or create one), and/or provide credit-card information to buy Internet access.
