IDS mailing list archives
Re: Scan for "outsider" Pcs on network
From: "Kurt Buff" <kurt.buff () gmail com>
Date: Fri, 17 Mar 2006 14:41:10 -0800
On 2 Mar 2006 23:47:59 -0000, dhamm () jackofallgames com <dhamm () jackofallgames com> wrote:
Is there a way to setup a scan and be notified of an intruding pc that is physically plugged into the network? When you have an enviroment with a large amount of network jacks, it's hard to make sure the ones no longer in use are turned off, and that no "visitors" have sat down to use your network connections, esp. if you have a large amount of contractors in and out. It got me to searching the net, and so far I have found one cemmercial product that can do it, but nothing else. Any suggestions?
Just one suggestion: Write a script that visits all of your switches/routers and gets their tables of pairs of ports and MAC addresses, then dump them into a database. Schedule it to do this periodically, say every 5-10 minutes. Kind of a roll-your-own distributed arpwatch, but it's what I'm doing by hand for our 6 48-port Cisco switches. Unfortunately, I don't have the scripting knowledge (Expect? PERL? Something else? SNMP, telnet or maybe some other query method?) to do this, though I know people have done it. And, of course, the obligatory plea to share if you have such a script. Kurt ------------------------------------------------------------------------ Test Your IDS Is your IDS deployed correctly? Find out quickly and easily by testing it with real-world attacks from CORE IMPACT. Go to http://www.securityfocus.com/sponsor/CoreSecurity_focus-ids_040708 to learn more. ------------------------------------------------------------------------
Current thread:
- Scan for "outsider" Pcs on network dhamm (Mar 03)
- Re: Scan for "outsider" Pcs on network Mircea MITU (Mar 09)
- Re: Scan for "outsider" Pcs on network Ron Gula (Mar 11)
- Re: Scan for "outsider" Pcs on network Eagle Fire (Mar 14)
- Re: Scan for "outsider" Pcs on network Ron Gula (Mar 11)
- Re: Scan for "outsider" Pcs on network Alice Bryson (Mar 14)
- Re: Scan for "outsider" Pcs on network Kurt Buff (Mar 20)
- Re: Scan for "outsider" Pcs on network Jean-Philippe Luiggi (Mar 21)
- <Possible follow-ups>
- RE: Scan for "outsider" Pcs on network Craig Wright (Mar 11)
- Re: Scan for "outsider" Pcs on network Eagle Fire (Mar 17)
- Re: Scan for "outsider" Pcs on network auto62996 (Mar 20)
- RE: Scan for "outsider" Pcs on network Craig Wright (Mar 21)
- Re: Scan for "outsider" Pcs on network Eagle Fire (Mar 27)
- Re: Scan for "outsider" Pcs on network auto62996 (Mar 30)
- Re: Scan for "outsider" Pcs on network Mircea MITU (Mar 09)