port traffic on a second networkcard
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Thread: port traffic on a second networkcard

  1. #1
    Senior Member
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    Nov 2001
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    276

    port traffic on a second networkcard

    Oki, here´s the setup.
    I´d like to set up a network at a friends place. There´s gonna be something like three or four computers running on it sharing the same internet connection. (She´s got a 10mb line)

    Last time I was there I connected and directly started downloading a firewall, (blackice) when I was done installing it I had an intruder poking around inside my puter (not including the outside scans)

    My thought is that instead of setting up the switch directly to the 10mb (and leaving every puter fending for itself) I want to put a puter between the wall and the switch. (with tiny firewall)

    And the question is, can a normal sniffer "notice" that there is a larger network behind the puter with tiny firewall (and a second network card)?

    Other security ideas are well received aswell
    Dear Santa, I liked the mp3 player I got but next christmas I want a SA-7 surface to air missile

  2. #2
    Senior since the 3 dot era
    Join Date
    Nov 2001
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    1,540
    I have some experience with Windows based firewall boxes at home... all of them where either instable, not free, consuming many resources, or simple didn't work right... If you want stability, use a simple Linux box with two NIC's as firewall and router. You can use a complete Linux distro to do this or use some floppy based 'mini' linux to do that. Like swfloppy or BBIagent. www.BBIagent.com

    If the firewall performs NAT, the normal SK-scanner will not detect computers behind your firewall. While they are on different nets --> 1st NIC : public IP from ISP
    2nd NIC : private IP assignd by your DHCP box or manual assign

  3. #3
    Senior Member
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    Tiny uses NAT, go for it.
    Bukhari:V3B48N826 “The Prophet said, ‘Isn’t the witness of a woman equal to half of that of a man?’ The women said, ‘Yes.’ He said, ‘This is because of the deficiency of a woman’s mind.’”

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