Security Incidents mailing list archives
Re: Bogon IPs traffic only seen by netflow, confined within a VLAN only
From: Stef <stefmit () gmail com>
Date: Mon, 10 Apr 2006 06:04:01 -0500
On 4/10/06, Nicolai van der Smagt <nicolai.vandersmagt () bbned nl> wrote:
Stef, Why don't you just span the entire VLAN to a machine capable of running tcpdump, use tcpdump -e to find the hardware address of the station(s) sending the traffic, and look up that address in the CAM table of your switch? Would be quicker than spanning 1 port at a time.. Kr, Nicolai van der Smagt
Thanks to all who answered - basically the suggestions revolved around the same type of solution I assumed originally to be needed (span/mirror/monitor ports, one at a time, to a probe machine - whether done via a script on the switch, itself, or controlled remotely). The above solution is different (saving tons of work), and it is in fact something I have tried in the past, but never been able to get to work properly [the entire traffic]. I am thankful for the reminder, as I could give it another shot. This 4506 is fairly knew, so hopefully things have improved since last time I have tried this ... Thanks again to all for answers - part of the hope I had was that someone could perhaps recognize the pattern, itself - but, if not, I promise I will get back to this list with a follow-up on our findings. Stef
Current thread:
- Bogon IPs traffic only seen by netflow, confined within a VLAN only Stef (Apr 09)
- Re: Bogon IPs traffic only seen by netflow, confined within a VLAN only Roland Dobbins (Apr 10)
- Re: Bogon IPs traffic only seen by netflow, confined within a VLAN only Valdis . Kletnieks (Apr 10)
- Re: Bogon IPs traffic only seen by netflow, confined within a VLAN only Roland Dobbins (Apr 10)
- <Possible follow-ups>
- Re: Bogon IPs traffic only seen by netflow, confined within a VLAN only Stef (Apr 10)
- Re: Bogon IPs traffic only seen by netflow, confined within a VLAN only Roland Dobbins (Apr 10)
- Re: Bogon IPs traffic only seen by netflow, confined within a VLAN only AJ Cochenour (Apr 11)
- Re: Bogon IPs traffic only seen by netflow, confined within a VLAN only Roland Dobbins (Apr 10)
- Re: Bogon IPs traffic only seen by netflow, confined within a VLAN only stcroix111 (Apr 10)
- Re: Bogon IPs traffic only seen by netflow, confined within a VLAN only tsteeves (Apr 12)
- RE: Bogon IPs traffic only seen by netflow, confined within a VLAN only David Gillett (Apr 12)
- Re: Bogon IPs traffic only seen by netflow, confined within a VLAN only Lupe Christoph (Apr 13)
- RE: Bogon IPs traffic only seen by netflow, confined within a VLAN only David Gillett (Apr 12)