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Sniff VLAN ID
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Topic: Sniff VLAN ID (Read 1367 times)
spetrillo
Hero Member
Posts: 721
Karma: 8
Sniff VLAN ID
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on:
July 08, 2020, 03:18:57 am »
Is there a tool that would allow me to sniff the traffic coming in from my ISP, so I can determine if they are pushing a VLAN ID?
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bartjsmit
Hero Member
Posts: 2018
Karma: 194
Re: Sniff VLAN ID
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Reply #1 on:
July 08, 2020, 08:35:30 am »
Run the connection through a managed switch and connect a sniffer (tcpdump + promiscuous NIC) to the monitor port that mirrors either the connection from your ISP or the connection to the rest of your network.
Bart...
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Sniff VLAN ID
