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Thread: security

  1. #1
    Junior Member
    Join Date
    Nov 2003
    Posts
    5

    security

    HI

    I'm new to knoppix/linux. Using Windows, I always ran Zonealarm firewall. With Knoppix, I feel "exposed" because there is no firewall. On the GRC Shields Up page It says I fail the Stealth test, but all ports show up as closed. Zone Alarm with Windows shows totally stealth.

    I have 3 questions-

    1-Is linux secure enough to use without a firewall?

    2-Can I install a firewall (or other software) when running knoppix live from cd?

    3-I understand the obvious security of not writing to the hard drive-only to the ramdisk, which disappears after rebooting. I've even run knoppix successfully with hard drive physically disconnected-so no chance of reading from it either. But does anyone know what kind of things hackers could do through your computer during a session-or is knoppix/linux not vulnerable like windows?

  2. #2
    Senior Member registered user
    Join Date
    Nov 2002
    Location
    USA, IL
    Posts
    1,041

    Re: security

    --If running from the CD, you should have few worries but you can always run iptables:
    http://www.knoppix.net/forum/viewtop...ight=basicprot

    (Go with the second post, the 1st one is outdated.) Check out the reference links at the bottom; you should have a basic understanding of iptables before implementing.

    --Don't forget to chmod +x the script, and (obviously) run it as root.

    --To see what ports are open on your system, ' nmap localhost '.

    Quote Originally Posted by kipizit
    HI

    I'm new to knoppix/linux. Using Windows, I always ran Zonealarm firewall. With Knoppix, I feel "exposed" because there is no firewall. On the GRC Shields Up page It says I fail the Stealth test, but all ports show up as closed. Zone Alarm with Windows shows totally stealth.

    I have 3 questions-

    1-Is linux secure enough to use without a firewall?

    2-Can I install a firewall (or other software) when running knoppix live from cd?

    3-I understand the obvious security of not writing to the hard drive-only to the ramdisk, which disappears after rebooting. I've even run knoppix successfully with hard drive physically disconnected-so no chance of reading from it either. But does anyone know what kind of things hackers could do through your computer during a session-or is knoppix/linux not vulnerable like windows?

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