Date: Fri, 22 Aug 2008 12:52:21 -0500 From: Jeffrey Goldberg <jeffrey@goldmark.org> To: chris27wjoyner@gmail.com Cc: questions@freebsd.org Subject: Re: Security questions, seeing more then one dhcp client. Message-ID: <04357C61-7D62-4099-BE0D-781892DABED2@goldmark.org> In-Reply-To: <58136.87561.qm@web56713.mail.re3.yahoo.com> References: <58136.87561.qm@web56713.mail.re3.yahoo.com>
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On Aug 21, 2008, at 10:38 PM, Christopher Joyner wrote: > I am seeing two dhcp clients connected to my wireless router. Does > that mean someone other then me is on it? Do you have a Wii? Or maybe an iPhone or other similar device? Or a network printer? There is a fair chance that the other client is something that should be there that you've just forgotten about. However, there is also also a reasonable chance that it is a security breach if you are running an unsecured wireless network. What I would recommend is that you probe the unknown device with something like nmap (available from ports security/nmap) with something like nmap -O -sV IP-ADDRESS-OF-MYSTERY-DEVICE That should give you a fair amount of information about the device. Cheers, -j -- Jeffrey Goldberg http://www.goldmark.org/jeff/
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