Basically: want to know who is on my WLAN at this moment?

Greetings,
I run a WLAN for the purpose of allowing my B&B Inn's Guest exclusive/limited/convenient access (i.e. no big downloads, etc... - I am using Satellite based internet service: not so great bandwidth). Also, of course, I run my own back office computers on this network. All Linksys stuff, starting with WRT54G router all the way down to Linksys NICs, and via WET54G (wireless bridge) and WRE54G (range extender) and WAP54G and wired switch and hubs.
I use WAP encryption and a custom SSID (I leave SSID broadcast on however) and I diligently change the encryption weekly (or more often sometimes, depending upon how many users I have had on the WLAN). I end up issuing my Guests a little card with the current encryption code on it.
I would like however to see when someone gets on the WLAN - of course, should be either me or Guests - just to make ABSOLUTELY SURE that I do not have hackers onboard and to see how many users I have at a time (never that many anyhow!)
Any way to do this type of basic monitoring?
I was using DELL's NETWORK ASSISTANT for a while - a utility that came with the DELL Inspiron 9400 I bought in 2006: it was for a while letting me know of the computers connecting to the WLAN, but stopped doing so lately. I am not sure why, and other DELL users have complained also of the fickleness of that (really not well supported by DELL) utility, which I want to just drop.
Thanks you for the assistance!
- Roger T

IIRC, I believe this will show you all clients by MAC address:

Go to the router at 192.168.1.1

select the "status" tab

click on the "local network" subtab

click the "DHCP CLients Table" button

Try downloading Look@lan utility at www.lookatlan.com - Network Monitoring and Management Solutions , it's free!!!!!

Dears,

it's Carlo Medas, look@lan author. Thank you for mentioning it here.

I wanted to let you know that a new free command-line tool is born: fing.
Not only it works on any platform, but it's faster and sharper than Look@LAN:
on any ethernet network (wireless included) it detects 100% of network nodes and provides also the MAC addresses.

Enjoy the view of your network!

Overlook team

Ok so I play an online game, I can play it fine at my home place but I'm in college at the moment ant the it department have blocked the use of any online games on the network. I know a few guys who play WoW on campus and the network admins don't mind at all! They use SOCKS-cap to run it but that doesn't work with the game I play - Dekaron_EU. (.: DEKARON online RPG game - GameTribe :.)

OK so I've tried a few things, SOCKS-cap, Tunnelling and external proxies. I'm pretty sure that using an external proxy won't work because the campus network will still be blocking the messages going to the proxy.

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Blackberry tracking system

GPS Based Wireless Solution

Hi,

Thanks for sharing your knowledge with us here.
I really appreciate the effort.

Regards
Ben Thomas

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Business Telephone Systems