[CentOS] how to find out promiscuous mode

Bill Campbell centos at celestial.com
Wed Feb 3 22:28:02 UTC 2010


On Wed, Feb 03, 2010, Vadkan Jozsef wrote:
>How can I find out that someone is using it's network card in
>promiscuous mode in a subnet?

We use the swatch log watcher, to detect lines like this in
/var/log/messages (this is from a system running VMware virtual
machines in bridging mode so this is normal):

Jan 28 17:35:57 pogo kernel: device eth1 entered promiscuous mode

Bill
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