RE: anyone who saw this arp traffic?

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Date: Mon, 28 Feb 2005 16:09:06 -0000
To: "dissolved" <dissolved@comcast.net>, "Monty Ree" <chulmin2@hotmail.com>

I've seen similar situations when using Virtual server technologies;

Often "internal" logical networks will throw martens onto the physical network.

HTH Andy

-----Original Message-----
From: dissolved [mailto:dissolved@comcast.net]
Sent: 25 February 2005 00:40
To: 'Monty Ree'
Cc: security-basics@securityfocus.com
Subject: RE: anyone who saw this arp traffic?


Are any secondary interfaces or sub-interfaces defined on a gateway?
-----Original Message-----
From: Monty Ree [mailto:chulmin2@hotmail.com]
Sent: Tuesday, February 22, 2005 8:41 PM
To: security-basics@securityfocus.com
Subject: anyone who saw this arp traffic?

Hello, all.

When I capture network traffic at server farm,I can see lots of arp
broadcast like below.
But there is no server which use 172.16.x.x ip address.
and curiously,

1. source ip and destination ip is same
2. more curiously, same traffic(source mac:0:10:dc:f1:f7:64 , source
ip:172.16.97.157) is seen at my office.
3. I can also see this traffic(source mac:0:10:dc:f1:f7:64 , source
ip:172.16.97.157 ) at other IDC.

Have you ever seen this traffic?
 
Thanks in advance.


10:15:26.759069 0:10:dc:f1:f7:64 Broadcast arp 60: arp who-has
172.16.97.157 (Broadcast) tell 172.16.97.157
10:15:26.803792 0:c:76:4e:4:c8 Broadcast arp 60: arp who-has 172.16.100.103
(Broadcast) tell 172.16.100.103
10:15:26.955878 0:c:76:4e:4:c8 Broadcast arp 60: arp who-has 172.16.100.103
(Broadcast) tell 172.16.100.103
10:15:26.967737 0:10:dc:f1:f7:64 Broadcast arp 60: arp who-has
172.16.97.157 (Broadcast) tell 172.16.97.157

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