Web hosting control panel - 450Part IIIChoosing and Installing a Linux DistributionWhen you

450Part IIIChoosing and Installing a Linux DistributionWhen you use a rescue CD to change a master boot record, fix partition tables, orclean viruses from a system, you risk doing irreparable damage to your computersystem. Remember that GPL software comes with no warranty, so you use thatsoftware at your own risk. KNOPPIX Security Tools DistributionThe Knoppix-STD goes lightweight on the window manager to go heavyweight onthe diagnostic tools. The distribution contains hundreds of security tools that canbe used for repairing and assessing computer and network security (see http:// knoppix-std.org/tools.html). Instead of a full GNOME desktop, Knoppix-STD uses Fluxbox window manager. Itwill run on lesser machines, but you ll get a usable GUI on almost any Pentium-classmachine with at least 64MB of RAM. With at least 640MB of RAM, you can run theentire distribution from RAM (type knoppix toramto boot it to run entirely fromRAM). With Knoppix-STD running in RAM, the system operates faster and your CDor DVD drive is available for other purposes. Ways of using Knoppix-STD tools include (but aren t limited to): .Assessing vulnerability Knoppix-STD has literally dozens of tools for assess- ing vulnerabilities. There are tools to let you scan shared Windows SMB folders(nbtscan), NetWare servers, CGI scripts (nikto and screamingCobra), the com- puter s ports (nmap), as well as scan for viruses (clamAV). You can also check ifsomeone has used a rootkit to replace critical system files (chkrootkit) or use ascanner dispatch (warscan) to test any exploit you like across lots of machines. .Running forensics on Windows machines If you believe a Windows systemhas been compromised, there are many tools you can use to find problemsand correct them. You can recover Internet Explorer cookies (galleta), convertOutlook Express dbx files to mbox format (readdbx and readoe), check systemintegrity with (ftimes), and check the Windows recycle bin (rifiuti). .Recovering data If a Windows or other operating system won t boot or isotherwise impaired, you can get data off that computer. You can copy filesover the network (using rsync, scp, or others) or back up to local CD or tape(cpio, tar, or others). You can selectively recover file types from disk images(foremost) or check and recover lost partitions (testdisk). .Dealing with intruders Tools like Snort (www.snort.org) let you analyzenetwork traffic in real time, as well as log and analyze data as attacks are hap- pening. Honeypots let you watch intruders moves as it leads them to believethey ve compromised your system. Honeypots in Knoppix-STD include honeyd(http://honeyd.org), thp (www.alpinista.org/thp). Kill zombies fromDDoS attacks with zz. Caution25_
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