Chapter 2 setting up your soho network, How does a firewall work, Chapter 2 – WatchGuard Technologies WatchGuard SOHO and SOHO | tc User Manual
Page 23: Setting u, Setting up your soho network
User Guide 2.3
11
CHAPTER 2
Setting Up Your
SOHO Network
How does a firewall work?
Fundamentally, a firewall is a way of differentiating between, as
well as protecting, “us” from “them”. On the public side of your
SOHO firewall is the entire Internet. The Internet has many
resources that you want to be able to reach, such as the Web, e-
mail, and conferencing. It also presents dangers to the privacy and
security of your computers. On the private side of your SOHO
firewall are all the devices you want to protect from these dangers.
Using rules we will discuss in Chapter 3: “Configuring Services for
a SOHO” on page 33, the WatchGuard SOHO evaluates all traffic
between the public network (Internet) and the private network
(your computers) and blocks any suspicious activity. In order for
this to work as described, you must first configure both the public
and private network to work together and to talk to one another as
well as the rest of the world.