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Network Security Firewalls
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RE: FW: Transparent firewall + HSRP

Subject: RE: FW: Transparent firewall + HSRP
Date: Fri, 22 Apr 2005 12:57:12 +0800

So when you tried transparent mode of the Cisco devices, what kind of
devices are they connected, lan switch or just routers?
I mean if you connected them to the lan swtich on which running STP, I
think the packets should not be sent to both of the CISCO devices.

-----Original Message-----
From: king loose [mailto:kingloose@gmail.com] 
Sent: Wednesday, April 20, 2005 12:13 AM
To: vtlists@wyae.de; firewalls@securityfocus.com
Subject: Fwd: FW: Transparent firewall + HSRP


Volker

I have tired Transparent mode with VRRP and Nokia with CISCO 
HSRP and was unsucessful in getting it to work, due to 
packets traveling via both CISCO devices.I am now using 
routing protocols to my vendors instead of HSRP.

Good luck.



-----Original Message-----
From: Volker Tanger [mailto:vtlists@wyae.de]
Sent: Friday, April 15, 2005 3:52 AM
To: firewalls@securityfocus.com
Subject: Re: Transparent firewall + HSRP

Good morning!

On Thu, 14 Apr 2005 14:08:16 +0200
Paolo Ottolino <paolo.ottolino@business-e.it> wrote:

does anyone know if the implementation of a mixed, transparent
(bridging) and packet, firewall on a router (like CISCO 
with IOS) can 
cause problems in a redundant architecture, by using, say, 
the HSRP or 
VRRP?

Sorry, you lost me somewhere. Where is which firewall 
located? You have Ciscos with IOS - and classic packet 
filters (routed). Where are the transparent systems located?

Generally speaking transparent firewalls are treated just 
like cables with respect to the routing protocols - except 
that failure detection might be a problem without active probing.

Bye

Volker

--

Volker Tanger    http://www.wyae.de/volker.tanger/
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