CHAPTER 8: About Security Policies
198
Vcontroller
To toggle a particular field’s bit to ON, click the 0 in a
field, which will automatically turn into a 1. To reverse
this setting, click the 1 to restore it to 0.
5
Click
Done
.
About NAT
Network address translation (NAT)–also called IP mas-
querading or port forwarding–takes IP addresses used on
one network and translates them into IP addresses used
within another network. You use NAT to hide network
addresses from hosts on another network. Hosts elsewhere
only see outgoing packets from the Firebox Vclass appli-
ance itself. You can improve security by mapping inside
(private or trusted) addresses to outside (public or
optional) addresses. Using NAT also conserves the number
of global IP addresses your company needs. More impor-
tantly, with NAT you can use a single public IP address for
all outgoing and incoming communication, which keeps
your trusted addresses secure.
Static NAT
You may have situations in which you want a subnet, a
server, or a group of users to be associated with a different
IP address than the one actually assigned to them. Whether
you want to maintain privacy for a number of client users
or hide internal assets from external view, you can do so
with static network address translation (
static NAT
).
The most important parameters necessary for creation of a
static NAT policy are:
•
The internal IP address of the private network asset/
client
•
The external IP address to which this internal device’s
IP address will be mapped
Summary of Contents for Firebox V10
Page 1: ...WatchGuard Firebox Vclass User Guide Vcontroller 5 0 ...
Page 32: ...xxxii Vcontroller ...
Page 40: ...CHAPTER 1 Introduction 8 Vcontroller ...
Page 52: ...CHAPTER 2 Service and Support 20 Vcontroller ...
Page 70: ...CHAPTER 3 Getting Started 38 Vcontroller ...
Page 110: ...CHAPTER 4 Firebox Vclass Basics 78 Vcontroller ...
Page 190: ...CHAPTER 7 Using Account Manager 158 Vcontroller ...
Page 268: ...CHAPTER 9 Security Policy Examples 236 Vcontroller ...
Page 410: ...CHAPTER 14 Monitoring the Firebox Vclass 378 Vcontroller ...
Page 456: ...CHAPTER 18 Using the Diagnostics CLI Feature 424 Vcontroller ...