User guide

User Guide vii
Contents
CHAPTER 1 Introduction to Network Security ........................1
Network Security .....................................................................1
About Networks .......................................................................2
Clients and servers ...............................................................2
Connecting to the Internet .......................................................2
Protocols .................................................................................3
How Information Travels on the Internet ...................................4
IP Addresses ...........................................................................5
Network addressing ..............................................................5
About DHCP .........................................................................5
About PPPoE ........................................................................6
Domain Name Service (DNS) ...................................................6
Services ..................................................................................6
Ports .......................................................................................7
Firewalls ..................................................................................8
Firebox® X Edge and Your Network ..........................................9
CHAPTER 2
Installing the
Firebox X Edge11
Package Contents .................................................................11
Installation Requirements ......................................................12
Identifying Your Network Settings ...........................................13
About network addressing ...................................................13