Ubuntu as a Server ..................................................................................................452
Ubuntu Spin-Offs ....................................................................................................454
Challenges Facing Ubuntu ......................................................................................454
Installing Ubuntu ....................................................................................................455
Starting with Ubuntu ..............................................................................................460
Trying Out the Desktop ..........................................................................................461
Adding More Software ............................................................................................462
Getting More Information About Ubuntu ..............................................................465
Summary ................................................................................................................466
Chapter 18: Running a Linux Firewall/Router . . . . . . . . . . . . . . . 467
Understanding Firewalls..........................................................................................468
Protecting Desktops with Firewalls ........................................................................469
Starting Your Firewall in Fedora ..............................................................................469
Configuring a Firewall in Mandriva ........................................................................470
Using Firewalls with iptables ..................................................................................472
Starting with iptables ..............................................................................................472
Setting Some Rules ........................................................................................472
Saving Firewall Settings ................................................................................476
Checking Your Firewall..................................................................................476
Using iptables to Do SNAT or IP Masquerading ......................................................477
Adding Modules with iptables ................................................................................478
Using iptables as a Transparent Proxy ......................................................................479
Using iptables for Port Forwarding ..........................................................................479
Getting iptables Scripts ..................................................................................480
Finding Out More About iptables ..................................................................480
Making a Coyote Linux Bootable Floppy Firewall....................................................480
Creating a Coyote Linux Firewall ............................................................................481
Building the Coyote Linux Floppy ..........................................................................482
Running the Coyote Linux Floppy Firewall ............................................................488
Managing the Coyote Linux Floppy Firewall ..........................................................488
Using a Web Interface ....................................................................................488
Using a Remote Login ....................................................................................488
Using Other Firewall Distributions ........................................................................490
Summary ................................................................................................................491
Chapter 19: Running Bootable Linux Distributions. . . . . . . . . . . . . 493
Overview of Bootable Linux Distributions ..............................................................493
Choosing a Bootable Linux......................................................................................494
Security and Rescue Bootables ................................................................................495
BackTrack Network Security Suite ................................................................496
SystemRescueCd............................................................................................497
KNOPPIX Security Tools Distribution............................................................498
The Inside Security Rescue Toolkit ................................................................498
Demonstration Bootables ........................................................................................500
xxiv
Contents
