Watchguard Firebox SOHO 6.1, Руководство пользователя, Страница: 21 / 140

User Guide 3
How Does a Firewall Work?
How Does a Firewall Work?
Fundamentally, a firewall is a way of distinguishing between, as
well as protecting, “us” and “them”. On the external side of your
SOHO 6 firewall is the entire Internet. The Internet offers many
resources such as the Web, email, and video/audio conferencing. It
also presents dangers to the privacy and security of your
computer. On the trusted side of your SOHO 6 firewall are all the
appliances you want to protect from these dangers. As is
illustrated in the image below, the SOHO 6 physically separates
your trusted network from the Internet.
Using rules or policies outlined in Chapter 3: “Configure Incoming
and Outgoing Services” on page 62, the WatchGuard SOHO 6
evaluates all traffic between the external network (the Internet)