Re: Internal Database server access from DMZ host

From: Joe Ippolito (joeat_private)
Date: Thu Jan 13 2000 - 16:43:33 PST

  • Next message: jussi.jaakonahoat_private: "RE: Linux firewall options"

    Your architecture should look more like this:
    
                                Internet
                                        |
                                        |
                        perimeter firewall<-->Amber Zone (DMZ)
                                        |
                                        |
                            Internal network
    
    
    Your firewall rules should look like:
    
    Source(s)                Destination(s)        Service(s)        Permit/Deny
    ----------------------------------------------------------------------------
    ---------------
    
    Req'd source(s)        DMZWeb               Req'd Port (80?)    Permit
    
    DMZWeb                   SybaseDB            Req'd Port(s)          Permit
    
    Any                                Any                        Any
    Deny
    
    Unless you want to push database to a DMZ machine and put all of that
    information at risk real-time.
    
    
    ----- Original Message -----
    From: Marcus Noveix <noveixat_private>
    To: <firewall-wizardsat_private>
    Sent: Monday, January 10, 2000 9:25 PM
    Subject: Internal Database server access from DMZ host
    
    
    > Hi
    >
    > I am new to this list and hoping for some positive feedback on the
    following
    > scenario.
    >
    > I am trying to implement a E-Commerce infrastucture currently which has
    the
    > following structure :
    >
    > Internet <-->perimeter firewall<-->Amber Zone<-->Internal network.
    >
    > There is a WEB server in the Amber zone needs connection to a Sybase
    Server
    > using Sybase Openclient to do queries on the DB(WEB server INITIATING
    > connection to the Sybase server).
    >
    > If this Sybase Server was to be in the INTERNAL network what sort of
    > security implications does this pose.
    >
    > I will make sure the security on the DB server is tightened and the server
    > is hardened but besides doing this, what other secure ways are
    > there of doing this.
    >
    > I have read a lot of literature on firewalls and so far gathered that no
    > INITIAL connection should be accepted from Amber Zone hosts to INTERNAL
    > Network
    >
    > Thanks in advance
    >
    > N
    >
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