Re: Is This DSL configuration possible ???
From: Al Dykes (adykes_at_panix.com)
Date: 12/28/03
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Date: 28 Dec 2003 12:41:47 -0500
In article <slrnbutvav.5ts.efflandt@typhoon.xnet.com>,
David Efflandt <efflandt@xnet.com> wrote:
>On 28 Dec 2003 08:46:56 -0500, Al Dykes <adykes@panix.com> wrote:
>>
>> I want to test some server systems and firewall combinations on my
>> LAN I can't see how to simulate access from the public internet.
>>
>> I've got a DSL/pppoe connection to a Linksys router/firewall (soon to
>> be replaced with an IPcop box). I'd love to put a small hub between
>> the linksys box and the DSL modem then plug a test client into the
>> hub. I know this won't work.
>>
>> Can this be done with a linux-based firewall, even if it requires a
>> third ethernet card ?
>
>What would a third ethernet do (unless you will have public static IPs on
>DMZ)? You could simply use 2 nics to insert test firewall between Linksys
>and hub with the LAN side a different network. You would just be
>temporarily firewalling the nic that faces the Linksys, and when ready to
>go live (direct to modem), would need to switch the firewall to ppp0
>(which can be refreshed automatically from a script in /etc/ppp/ip-up).
>
>This would allow you to test port scanning from a PC on the Linksys
>without being wide open to the internet.
>
A fair suggestion, but.....
I really want to test the production firewall sometimes, while I'm on
customer's site, and they don't know why they need a second firewall
box on hand. It's more than port scanning. I can do that kind of
thing from the shell account on my ISP's system. Having two firewalls
means that I have to manually keep them set up identically, and that's
real hard to do, over time.
>--
>David Efflandt - All spam ignored http://www.de-srv.com/
-- Al Dykes ----------- adykes@panix.com
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