One thing you might want to check is to make sure that the offending IP
address is not part of any DHCP schema. Having a static IP in the middle of
your DHCP range is a sure-fire way to cause IP conflicts! Trust me, I know
this from personal experience! :-)



-----Original Message-----
From: Ben Scott [mailto:[email protected]] 
Sent: Monday, April 12, 2010 1:13 PM
To: NT System Admin Issues
Subject: Re: Initial access to server denied, then accepted

On Mon, Apr 12, 2010 at 10:51 AM, Jay Dale <[email protected]> wrote:
> I went into the server EV and noticed there was one error saying there
> was a duplicate IP address on the network, with the MAC address being
> the MAC of our firewall.

  Either your firewall thinks it "owns" that IP address, or (as MBS
suggests) the firewall is doing proxy ARP to another network, and a
device on *that* network thinks it owns that IP address.

  Find the offending device and fix it.  Most likely, change the IP
address assignment on the offending device.  If the firewall is
routing between the two networks, you don't need proxy ARP.  If the
firewall *isn't* routing between networks, it probabbly should be.  :)

On Mon, Apr 12, 2010 at 12:18 PM, Jay Dale <[email protected]> wrote:
> It's a dynamic arp request.  So is there a location to add a fixed arp ...

  ARP, while technically part of the scenario, is really just
confusing the issue.  The problem is you have multiple network nodes
which are both responding to the same IP address.  Find that and fix
it.  :)

-- Ben

~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/>  ~



~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/>  ~

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