Chapter 19 . Running Bootable Linux Distributions 489 (Http web server)
Chapter 19 . Running Bootable Linux Distributions 489 . Managing a firewall Bring a firewall up quickly or assess what s happening on a running firewall. The blockall script can block all inbound TCP traffic, flushall flushes your firewall rules, and fwlogwatch can monitor firewall logs. The firestarter and floppyfw utilities offer quick ways to start up a firewall. Tools for managing iptables firewalls include gtk-iptables and shorewall. Popular Linux rescue CDs that illustrate very well how many tools you can get on a single CD include System Rescue CD, Auditor Security Collection, Knoppix-STD and the Inside Security Rescue Toolkit (INSERT) rescue CDs. When you use a rescue CD to change a master boot record, fix partition tables, or clean viruses from a system, you risk doing irreparable damage to your computer system. Remember that GPL software comes with no warranty, so you use that software at your own risk. Auditor Security Collection A wide-range of powerful, well-organized security tools are on the Auditor Security Collection LiveCD (http://new.remote-exploit.org/index.php/Main_Page). Auditor is based on KNOPPIX, so the boot process and basic desktop environment (KDE, by default) will be familiar if you have used KNOPPIX before. Auditor offers a good combination of GUI and command-line security tools. The Auditor menus (shown in Figure 19-1) organize all of those tools together. This lets you look in one place for all similar tools. When you select a command from a menu, the command runs with the help (-h) option so you can see how it works. It s up to you to then type the command and add the options you want. Figure 19-1: Auditor organizes graphical and command-line security tools. System Rescue CD The System Rescue CD (www.sysresccd.org) is aimed squarely at recovering crashed systems. Tools included on this distribution include those specifically for repairing and saving your data, such as: . Disk partitioning tools You can check, add, remove, move, and resize disk partitions with tools such as parted and qtparted. Caution
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