How do you detect all devices attached to your wireless network?

Question

I want to be able to pick up devices connected to our wireless network.

Namely:
1) Someone connects to OUR wireless device using their phone
2) We detect a new device is on the network and pick up the MAC Address off the phone

Does anyone know how to do this using C# libraries or can point me in the right direction?

Much appreciated.

We are going to put our own wireless access points (hardware) in so going forward I think we have control over this for new deploys. However here at the office we have a few Linksys WAP200 point. — Garth, Jun 24 '11 at 11:03

score 2 · Answer 1 · answered Jun 24 '11 at 11:08

2

I would prefer to write an Application which is going to Connect at you're Router. You can do it in 2 ways
1. Web Interface
2. Telnet Client

Using Web Interface WebRequest and Regex are you're friends where you can get from Router Connected Client's. Or using Telnet Client where Sockets is you're friend in this case . In both way's you can get any message you want and store them in a String where you can filter later .

answered Jun 24 '11 at 11:08

Rosmarine Popcorn

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Do you know of any resources/sites/forums that show anything on this? Been googling around and can't seem to find much. – Garth Jun 24 '11 at 11:50
You cant find an exact example but learn how to use all this Stuff ,try first to Filter a Local HTML ,use Regex in that case i think you can learn ,than try to use WebRequest .....step by step buddy – Rosmarine Popcorn Jun 24 '11 at 12:20
Good idea! Easier to implement. – Muhammad Hasan Khan Jun 24 '11 at 12:53

score 1 · Answer 2 · answered Jun 24 '11 at 10:54

1

Use a packet capture library like libpcap (.NET port is SharpPcap or pcap-sharp) and resolve the IPs on the network. You have to operate in Promiscuous Mode (Known as Monitor mode in WIFI terminology). Very few WIFI adapters provide this feature. If you can have a wired connection to router; it will be easier.

answered Jun 24 '11 at 10:54

Muhammad Hasan Khan

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Scuse my ignorance on this... If a client connects to the network they will get assigned an IP address? Would I also be able to get their MAC address? Thanks :) – Garth Jun 24 '11 at 11:08
Yes you can get mac for ip http://stackoverflow.com/questions/187894/how-do-i-obtain-the-physical-mac-address-of-an-ip-address-using-c – Muhammad Hasan Khan Jun 24 '11 at 12:51

score 1 · Answer 3 · answered Jun 24 '11 at 10:58

1

you might want to look at Managed WiFi API

answered Jun 24 '11 at 10:58

Afnan Bashir

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Does this not look for wireless networks? I am not looking for wireless networks a want to know what clients are connecting to ours. – Garth Jun 24 '11 at 11:00

How do you detect all devices attached to your wireless network?

3 Answers3