Re: ipfw/natd broken?

From: Clint Wilson (clint_at_southerncomp.com)
Date: 04/28/05

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    Date: Thu, 28 Apr 2005 09:23:51 -0500
To: freebsd-isp@freebsd.org

    Troy Settle wrote:

    > All,
    >
    > I have a box (486, 16mb) running FreeBSD 3.51-something. It's been in
    > service for the better part of 10 years (originally 2.0.5 or so).
    > It's acting as a router/nat device for a network with about 50 desktop
    > systems, and has never given me a problem until this week.

    Troy, I would highly highly recommend upgrading your system. It is
    apparent it has internet access, and there are numerous exploits that
    could compromise the integrity of your entire network.

    >
    > It seems that VPN (PPTP) won't work behind NAT. I can use VPN tunnels
    > from XP PRO to both windows servers and linux-based VPN servers all
    > day long from home using my netgear broadband router, but from this
    > location, behind the FreeBSD box, they won't work.

    The aforementioned being said, I am unaware at this time of any reason
    why this might not work on 3.5. I am currently doing this same setup
    IPFW+NATD+FreeBSD 4.11 (Soon to be upgraded to 5.4) and it is working
    with no problems. There have been a lot of changes to IPFW since your
    version of FreeBSD I am also sure the natd daemon has been revised as
    well since your version. I would upgrade to 5.4 set your nat and ipfw
    back up and see if the problem still is there.

    >
    > What gives?
    >
    > 

    -- 
Clint Wilson
Southern Comp Solutions LLC
http://www.scsisp.com
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