0

I have router enabling fixed MAC's to connect to internet. All devices are connected by LAN to the router. Problem I'm having is that i don't want to allow another device connect through one using ad hoc network with allowed internet sharing. Is there a way to monitor this? and Can I identify whether there was more than one device connected through 1 MAC from router logs? (I have access only to the router). Edit: ad hoc is NAT

Thanks.

Improve this question
2
  • Router is Cisco 7301. And ok I edit question to be correct.
    – Emkei
    Commented Sep 28, 2016 at 17:38
  • Did any answer help you? If so, you should accept the answer so that the question doesn't keep popping up forever, looking for an answer. Alternatively, you could provide and accept your own answer.
    – Ron Maupin ♦
    Commented Aug 15, 2017 at 3:48

1 Answer 1

Reset to default
1

It depends. Most likely, the device doing the sharing is acting as a router. That is, the ad-hoc network will be one subnet and the LAN connection another. In that case, the MAC address of the packets will always be the sharing PC. Depending on the way the sharing PC is set up, it may also be performing NAT, so the source IP address also will be that of the PC. That will make it difficult to tell the difference.

If the sharing PC acts as a bridge, then you will see the original MAC addresses, and you can filter on that.

Improve this answer
3
  • I'm asking exclusively about NAT, tested bridge earlier and it showed original MAC (as you are saying). From tests with NAT I can not see difference, so it is possible it can not be detected.
    – Emkei
    Commented Sep 28, 2016 at 17:49
  • With NAT, there will be nothing in the router logs.
    – Ron Trunk
    Commented Sep 28, 2016 at 18:01
  • There is not. I meant I can not see difference between ad hoc device connected and not connected.
    – Emkei
    Commented Sep 28, 2016 at 18:04

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.