Passive router home security
 

How do I log the mac address of devices my wifi router 'handshakes' with but doesn't actually connect with?

Can it be done with bluetooth as well?

Not looking to be nefarious but seems like a good addition to my layered home security.

What brand of router?

It's different in different models. Most of them you have to go to advanced or diagnostics and turn on logging (syslog). There are some tools out there to help parse the logs. They tend to be very tedious to read by hand.

The console commands for a router running Cisco's OS are:

archive
log config
logging enable
notify syslog contenttype plaintext
hidekeys
logging on
logging 192.168.1.1
login block-for 60 attempts 3 within 60
login on-failure log every 1
login on-success log every 1

Its a linksys WRT router

I havent reflashed the firmware for openWRT but assume I should to be able to do this...

The only thing I know of that is available on Linksys is the security log under Troubleshooting->Log in the web admin pages.

I have a Linksys WRT router myself. I screwed around a bit to see what I could find, but Linksys apparently doesn't do consoles any more. The router does have telnet open (TCP port 23), but it refuses all connections on both public and private interfaces.

I've never had to worry about it because I don't have WiFi enabled. My network is wired only and behind a Cisco ASA firewall with separate physical segments for different purposes.

I'm not a fan of reflashing to open source. If you do, all support goes away.
You are reduced to begging for answers in their forums if you have an issue.