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| Subject: | Re: Scan for "outsider" Pcs on network |
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| Date: | Fri, 17 Mar 2006 15:51:07 +0000 |
Yes, but the hub must be deployded by someone who has a usernameand password to connect to your network. It is like you wonÂt usekeylocks in the door just because someone can lend the key to some onenot authorized. So for me, wireless and wired is the same. -tlecu On 15/03/06, auto62996@hushmail.com <auto62996@hushmail.com> wrote:> 802.1X works quite well in a wireless environment where there is> continual authentication of the client but it can be subverted on a> wired LAN simply by using a $10 hub. Attaching a legitimate device> to the hub will keep the switch port open and allow anything else> you connect to the hub to access the LAN.>> -----Original Message-----> From: Eagle Fire [mailto:tlecuauhtli@googlemail.com]> Sent: 13 March 2006 10:06> To: focus-ids@securityfocus.com> Subject: Re: Scan for "outsider" Pcs on network>>> Could be 802.1X an alternative? Probably hard to deploy, switches> and wireless AP with the feature and some OS challenges but it may> be a solution.>> -tlecu>> On 09/03/06, Ron Gula <rgula@tenablesecurity.com> wrote:>
At 05:15 AM 3/6/2006, Mircea MITU wrote:> > >On Thu, 2006-03-02 at 23:47
+0000, 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?> > >> > >Sure, use arpwatch.> >> > Actually, this will find "new" hosts all the time with little> > discrimination between a new valid laptop on the LAN and a> visiting> > consultant in the conference room.> >> > A lot of SIMs have the ability to process log files (such as> those of> > arpwatch or the dhcp logs of a Windows server) and identity the> MAC> > address. If you can recognize a "new" MAC address and also> associate> > it with something interesting like "the conference room" or "the> > server farm" you can specify different levels of alerting or> logging.> > An example of this is here in one of Tenable's TASL event> correlation> > rules:> >> > http://cgi.tenablesecurity.com/tasl/new_mac.tasl> >> > The particular script is simple in that it just alerts on> > a new MAC addr. Different scripts could consume output of this> script> > and have 2nd order alerts depending on the location of the IP> address> > issued, the type of MAC, .etc.> >> > Ron Gula, CTO> > Tenable Network Security> >> >>>>>> Concerned about your privacy? Instantly send FREE secure email, no account required> http://www.hushmail.com/send?l=480>> Get the best prices on SSL certificates from Hushmail> https://www.hushssl.com?l=485>>
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