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Installing IPCOP as a firewall

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    • Part 2 of this mini how-to goes through the process of installing IPCOP to act as a firewall between my laptop and the Belkin Router to allow me to monitor my monthly download usage.

    1. Download IPCOP
      Goto www.ipcop.org and click on the download link, it will take you to sourceforge.net where you can download the latest i386 ISO image. Burn the ISO to a CD-ROM. Whilst you are there also download the installation and administration manuals.
    2. Choose your network type
      Read through the install manual. There is a whole section that describes different network set-ups depending on the available hardware. For my purposes I fell into the GREEN + RED interface setup.
    3. Prepare the computer
      I needed to but some extra hardware, namely a switch and a couple of network cards. I got them off ebuyer for the total of £20, if you can check the NIC chipset against IPCOP's hardware compatability list. Disable in the BIOS on the computer that you are going to use for IPCOP any motherboard ethernet ports. Then physically install the new NIC cards.
    4. Install IPCOP
      Put the CD from step 1 in and boot up the computer. The install program will start. Refer back to the Quick Install guide PDF from IPCOP's documentation. I found this to be the easiest method to install without having to wade through all the manual. Also after install re-boot everything on the new network, inclusing the Belkin.
    5. Post-install tasks
      After installation has complete, you should be able to browse to the IPCOP web interface from any of the computers in the GREEN interface. Type n a browser https://ipcop:445. Once there it will prompt you for the admin username and password combo that was set during install.
    6. Conclusion
      All in all it was a fairly painless install of IPCOP. The only two gotchas I had was that I had purchased two NIC with the same Realtek chipset, so working out which was which interface, GREEN or RED, was a bit tricky.Just unplug cables until it works. The other problem involves the Web GUI. It needs http referrer in order to allow changes to be made to IPCOP configuration. For some reason my Firefox on my usual user account had this switched off. I logged into another account on xubuntu and tried and it worked. See this thread on IPCOP forum to see how to enable HTTP referrer.

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