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If a network router has been set to isolate every client (clients cannot see or communicate with each other) like in a VPN, will Wireshark be able to read the packets of other computers on the network?

asked 08 Apr '13, 07:18

Charlie%20Kucukterzi's gravatar image

Charlie Kucu...
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accept rate: 0%


Your question title is:

Can Wireshark get around AP isolation?

You question is:

If a network router has been set to isolate every

Are we talking about a wifi/wlan AP/router or a 'standard router' with a built-in switch?

As for the wifi/wlan AP: Wireshark will see the whole WLAN traffic if your capturing device operates in monitor mode. Client isolation is just a filter within the AP. So, in this case the answer would be: Yes you can get around client isolation, as you will see the whole WLAN traffic.

As for a 'standard router' with a built-in switch: If there is a feature called 'client isolation' at all (I have never seen such a thing), I would assume that this will prevent packets of device A to be seen by device B. As both are connected to the internal switch of the router, the switch will implement a filter to prevent packets from device B to be sent to the port of device A and vice versa. In that case, the answer is NO, you can't get around client isolation unless you tap into both (all) physical lines of device A and device B.

Regards
Kurt

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answered 08 Apr '13, 07:21

Kurt%20Knochner's gravatar image

Kurt Knochner ♦
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accept rate: 15%

edited 08 Apr '13, 07:25

Yes I meant the Wifi router. Thanks. People keep mentioning the "monitor mode" but I only have the promiscuous mode and I'm assuming it means the same thing.

(08 Apr '13, 07:36) Charlie Kucu...
1

but I only have the promiscuous mode and I'm assuming it means the same thing.

no, it's not the same thing on a wifi/wlan network.

http://wiki.wireshark.org/CaptureSetup/WLAN#Monitor_mode

(08 Apr '13, 07:38) Kurt Knochner ♦
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question asked: 08 Apr '13, 07:18

question was seen: 4,004 times

last updated: 08 Apr '13, 07:38

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