RE: What do I need to do?

From: Thomas E. Dukes (edukes_at_alltel.net)
Date: 03/04/04

  • Next message: bulent acikgoz: "Re: cd mount" 
    To: <redhat-list@redhat.com>
Date: Thu, 4 Mar 2004 07:08:14 -0500

    > -----Original Message-----
    > From: redhat-list-admin@redhat.com
    > [mailto:redhat-list-admin@redhat.com] On Behalf Of Pete Nesbitt
    > Sent: Thursday, March 04, 2004 12:52 AM
    > To: redhat-list@redhat.com
    > Subject: Re: What do I need to do?
    >
    > On March 3, 2004 05:51 pm, Thomas E. Dukes wrote:
    > > Hello,
    > >
    > > I'd like to have a local machine behind a firewall to receive www
    > > requests from the outside. I have a firewall using IP
    > Masqueurading
    > > with port forwarding but that doesn't work. I keep getting
    > the "visable" machine.
    > >
    > > Do I need to setup a bridge, proxy server or is there
    > something I need
    > > to do with my local dns, etc.? I don't really know what this is
    > > called to know where to start.
    > >
    > > TIA
    >
    >
    > Hi Thomas,
    > I'm running a similar setup, but the server is in a dmz. All
    > you need for that aspect of the firewall rules is pre and
    > post routes above the main rules, something like:
    >
    > #inbound redircts to webserver (all one line) $IPTABLES -A
    > PREROUTING -t nat -p tcp -i $EXT_IF --dport 80 -j DNAT
    > --to-destination $WEB_SERVER_IIP
    >
    > # outbound web server connections are all masquaraded (all
    > one line) $IPTABLES -A POSTROUTING -t nat -o $EXT_IF -s
    > $WEB_SERVER_IP -j MASQUERADE

    Thanks for your help!!

    What are the values for $EXT_IF and $WEB_SERVER_IIP? I am guessing $EXT_IF
    is the single external ip address and $WEB_SERVER_IIP is the internal ip
    addrerss of the local machine behind the firewall, right?

    Wouldn't I need to change the port to something different than 80, such as
    8080, so I can get www requests on both the visable and internal machine?
    (The internal machine is a XP Pro server. I want to be able to run ASP
    applications that use MS_Access or MSSQL databases.)

     
    > (you may not need the outbound)
    >
    > That should work if you are running non-routable boxes behind
    > a sind IP address.
    > --
    > Pete Nesbitt, rhce
    >
    >
    > --
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