451Chapter 18Running Bootable Linux (Web space) Distributions .Using and analyzing
451Chapter 18Running Bootable Linux Distributions .Using and analyzing encryption techniques Many tools enable you to useencryption techniques to protect your data and find when others have triedto compromise it. GNP privacy guard (gpg) is used for verifying the authentic- ity of computers and people. For setting up virtual private networks, there arestunnel and super-freeSWAN VPNs. You can find images (giffshuffle, stegbreakand stegdetect) and music (mp3stego) that contain hidden messages from atechnique called steganography. .Managing a firewall Bring a firewall up quickly or assess what s happeningon a running firewall. The blockallscript can block all inbound TCP traffic, flushallflushes your firewall rules, and fwlogwatchcan monitor firewalllogs. The firestarterand floppyfwutilities offer quick ways to start upafirewall. Tools for managing iptables firewalls include gtk-iptablesandshorewall. These tools only touch the surface of what you can do with Knoppix-STD. Go totheproject s Tools page (www.knoppix-std.org/tools.html) to find out aboutmore feature in the project. Or, go to the download page (www.knoppix-std.org/ download.html) to download and try it yourself. The Inside Security Rescue ToolkitINSERT (Inside Security Rescue Toolkit) is another KNOPPIX derivative that includesfeatures from Damn Small Linux as well. It bills itself as a disaster recovery and net- work analysis system. It contains a more compact set of tools to fit on a bootablebusiness card (about 50MB). Check it out at www.freshmeat.net/projects/ INSERT/. The INSERT CD image is included on the CD that comes with this book. Refer toAppendix A for information on copying and burning INSERT to CD. The Fluxbox window manager offers some docked system monitors for monitoringCPU, network traffic, memory and swap use, and battery (if you are on a laptop). Another applet displays the Matrix screen saver (double-click it to launch a Terminalwindow). The mount applet lets you step through the CD, floppy, and hard-disk partitions on your computer. Click the key button on that applet (so it turns green), and you can double-click it to mount and open that device or partition. Right-click the desktop to see a menu that lets you select from a handful of graphicaltools for troubleshooting your computer and network, most of which will run fromthe shell. Figure 18-1 shows the INSERT desktop. You can find what s in INSERT from the List of Applications page on the InsideSecurity site (www.inside-security.de/applicationlist.html). On theCD-ROM25_
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