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Thread: Using Ubuntu with 2 NIC as a port blocking bridge

  1. #1
    Join Date
    Aug 2005
    Beans
    230
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Using Ubuntu with 2 NIC as a port blocking bridge

    I have part of a network running across a wifi mesh throughout a worksite. In normal operation I only need to use VNC and FTP to/from these PCs (ie. only ports 21 and 5600) but it would be useful to be able to temporarily turn any filter off if I need to send files or any other maintenance work.

    Most firewalls work as routers so I'd have to have a different IP range on either side, which in this instance I'd rather not do.

    My plan is to have a small pc with 2 NICS running as a bridged filter allowing only the FTP&VNC traffic to pass in normal operation. A web interface would be useful for my less linux-knowledgable colleagues to manage when I'm not here.

    Any ideas on setup & software?

  2. #2
    Join Date
    Oct 2005
    Location
    Al Ain
    Beans
    7,922

    Re: Using Ubuntu with 2 NIC as a port blocking bridge

    Read the Advanced Routing Howto on tldp.org.

    Cheers,

    Herman

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