> I do think tri-homed firewalls are a good solution, but they are not
> as secure as a two firewall solution.
Why not combine both topologies?
Internet
|
|
|
Ext FW ----------- External DMZ
|
| (Int DMZ)
|
Int FW
|
|
|
LAN
The network between the Ext FW and the Int FW could be used as
an "internal DMZ" for the proxy server. Then, the external DMZ
could be reserved solely for those machines that the outside world
must have access to. Ideally, the external FW and the internal FW
should be using different software (pf, iptables, ipf, etc).
What do you think? Am I overly paranoid?
Steve Bremer
NEBCO, Inc.
System & Security Administrator
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