RE: Upstream router and DMZ configuration...confused~~!!
- From: "Thomas W Shinder" <tshinder@xxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 23 Jun 2005 05:42:10 -0500
Hi Marvin,
What resources do you have in the DMZ?
Thanks!
Tom
www.isaserver.org/shinder
Tom and Deb Shinder's Configuring ISA Server 2004
http://tinyurl.com/3xqb7
MVP -- ISA Firewalls
> -----Original Message-----
> From: MarvinC [mailto:marvinc@xxxxxxxxx]
> Sent: Thursday, June 23, 2005 1:13 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: Upstream router and DMZ
> configuration...confused~~!!
>
> http://www.ISAserver.org
>
> Ok so this leaves me with the following:
>
> Internal:
> IP: 10.0.0.x
> Subnet: 255.0.0.x
> GW:
> DNS: IP of internal DNS server.
>
> DMZ:
> IP: 172.16.0.x
> Subnet: 255.0.0.x
> GW:
>
> External: ISP Static IP
> IP: 70.148.240.122
> Subnet: 255.255.255.248
> GW: 70.148.240.121
>
> Dial Up: BellSouth Connection
>
> Now comes the newbie questions:
>
> 1. Do I need to create any records or zones for the DMZ on the
> internal DNS server?
>
>
> On 6/23/05, Jim Harrison <Jim@xxxxxxxxxxxx> wrote:
> > http://www.ISAserver.org
> >
> > Hi Marvin,
> >
> > You dun a bad ting.
> > 1. Ditch the GW on the DMZ interface - it's non-functional.
> > 2. Unless you plan to lose lots of hair, you've failed to meet the
> > "public address" part of the DMZ network
> > 3. The static route Tom refers to is at the router, not the
> ISA. ISA in
> > effect becomes "another hop in the chain" between the ISP router and
> > your DMZ.
> > 4. Based on your IP setting, you don't have enough IPs to create a
> > public DMZ. Your /29 address space only provides 6 usable
> addresses;
> > not enough to subnet off for a DMZ.
> >
> > -----Original Message-----
> > From: MarvinC [mailto:marvinc@xxxxxxxxx]
> > Sent: Wednesday, June 22, 2005 9:51 PM
> > To: [ISAserver.org Discussion List]
> > Subject: [isalist] Upstream router and DMZ
> configuration...confused~~!!
> >
> > http://www.ISAserver.org
> >
> > I've asked this question before but it was under different
> > circumstances so I need to try again for further clarification.
> > This may seem like a "dumb question" but it's one I have to ask so
> > please accept my apologizes in advance if anyone's bothered by it.
> > I have the Configuring ISA 2004 book and I'm reading an article in
> > Chapter 7 entitled "Creating and configuring a public address
> > tri-homed DMZ Network". I have on my ISA2K box three (3) network
> > adapters with the following settings in the following order:
> >
> > Internal:
> > IP: 10.0.0.x
> > Subnet: 255.0.0.x
> > GW:
> > DNS: IP of internal DNS server.
> >
> > DMZ:
> > IP: 172.16.0.x
> > Subnet: 255.0.0.x
> > GW: 172.16.0.1
> > DNS: 172.16.0.1
> >
> > External: ISP Static IP
> > IP: 70.148.240.122
> > Subnet: 255.255.255.248
> > GW: 70.148.122.121
> >
> > There is mention in the book on creating static routes to
> the upstream
> > router to ensure communication between the networks. I'm
> not sure what
> > the upstream router is and need clarification. Is this a
> seperate unit
> > functioning as a router or is this the ISA server? Where do I enter
> > this command and is this the correct syntax for the command:
> >
> > router add 172.16.0.0 add 172.16.0.0 0 mask 255.255.0.0 192.168.1.20
> >
> > Would anyone have any links or articles that cover static routes as
> > they relate to ISA2K4? I'm also trying to determine if the external
> > interface consititutes as a public address?
> > ANY responses are greatly appreciated. ANY!!!
> >
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