RE: Bi-Pass NIC Card
- From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Sat, 5 Feb 2005 07:48:35 -0800
Sorry, Wayne - the first time I see a customer installing such a device
in their system, I:
1 - beat them more senseless
2 - walk off the premises
3 - post their company and IT manager names on www.1d10t.com
<http://www.1d10t.com/>
This isn't "failure redundancy" any more that plugging all your machines
and Internet into the same switch/hub is "management simplification".
Frankly, this idea has as much merit as depending on a script to
automate your ISA policy decisions based on alerts.
BTW, does anyone else find it appropriate that the 1d10t.com domain name
has been registered since 1999, but isn't being used?
-------------------------------------------------------
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
<http://isaserver.org/Jim_Harrison/>
http://isatools.org <http://isatools.org/>
Read the help / books / articles!
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________________________________
From: Wayne Berry [mailto:wayne@xxxxxxxxxx]
Sent: Friday, February 04, 2005 09:17
To: [ISAserver.org Discussion List]
Subject: [isalist] Bi-Pass NIC Card
http://www.ISAserver.org
ISAList:
For another project I am working on we have on hand some Bi-Pass NIC
Cards. Basically, they are a single NIC card with two network ports on
the back, however unlike other two port NICs if there is a power failure
then they have a mechanical switch that bridges the two NICs together
allowing all network traffic to pass across them bi-passing the box
(like a single wire). They also have a watch dog that can be enabled so
you can bridge them on software failure, i.e. the software tells the
card to stay non-bi-pass every 3 seconds or it automatically bi-passes,
if the software process goes down then the NIC bi-pass.
The interesting idea here is that if you used this in an ISA box you
could have your two NICs, and some sort of failure redundancy. The
biggest drawback is that if the power fails then you have no more
firewall <- Big Ouch. However, if you were only running the ISA server
as a reverse or forward proxy cache then they might be helpful. But, in
proxy mode you are probably running a one NIC scenario anyways. I don't
know if this is such a good idea - but someone else might have a way to
use these type of cards.
Thoughts, Comments, Concerns.
-Wayne
The ISAPI Dev Lurking on the ISA Admin List
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