<div>
As far as passive scanning I would recommend Wireshark.<br />
Otherwise I would setup Nagios
</div>


As far as passive scanning I would recommend Wireshark.
Otherwise I would setup Nagios

<div>
what is out there that might alert us via email if an unknown device were plugged into our network?
</div>


what is out there that might alert us via email if an unknown device were plugged into our network?

<div>
If you're looking specifically at wireless devices, then this might work for you:<br />
<br />
<a href="http://whoisonmywifi.com/" rel="ugc">http://whoisonmywifi.com/</a><br />
<br />
There is a free version you can try.<br />
<br />
You haven't mentioned how large the network is that you want to monitor.
</div>


If you're looking specifically at wireless devices, then this might work for you:

http://whoisonmywifi.com/ [http://whoisonmywifi.com/]

There is a free version you can try.

You haven't mentioned how large the network is that you want to monitor.

<div>
not really looking at WiFi devices at all. The network i'm monitoring is a medium sized business network
</div>


not really looking at WiFi devices at all. The network i'm monitoring is a medium sized business network

<div>
<div class="content wysiwyg-content">
What do you guys recommend as far as scanning your network for known/unknown devices connected to it? Looking to implement a solution for this. And why do you recommend it? thanks in advance!
</div>
</div>


What do you guys recommend as far as scanning your network for known/unknown devices connected to it? Looking to implement a solution for this. And why do you recommend it? thanks in advance!

recommended network scanner out there?

Network analysis is the process of identifying and remediating the processes and systems within a network, including performance, connectivity and security. The process is performed through the use of tools developed for monitoring and analyzing network activity. Network problems that involve finding an optimal way of doing something are studied under the name combinatorial optimization. Examples include network flow, shortest path problem, transport problem, transshipment problem, location problem, matching problem, assignment problem, packing problem, routing problem, Critical Path Analysis and PERT (Program Evaluation & Review Technique).