VLAN Broadcasts Testing

4RR3N

Hi,

I want to check if VLAN firewall rules are properly implemented and I read that to do it, I need to listen for a broadcast from a different VLAN on the VLAN that I'm connected on.

Wireshark software was recommended to do it but I can't find any easy tutorial videos on YouTube that would help me with this task.

Does anyone have any recommendations\tutorials that I can follow to perform this test ?

Much appreciated
Thanks

johnpoz

@4rr3n said in VLAN Broadcasts Testing:

Does anyone have any recommendations\tutorials that I can follow to perform this test ?

Wireshark would show this traffic by just turning it on and starting a capture..

You could do that on pfsense itself as well.. Diagnostic, packet capture.

JKnott

@4rr3n said in VLAN Broadcasts Testing:

I need to listen for a broadcast from a different VLAN on the VLAN that I'm connected on.

Broadcasts don't pass through a router. You'll have to do the packet capture on the VLAN with the broadcasts you want. As johnpoz mentioned, you can just start capturing in Wireshark, but it's far more useful with filters. Wireshark has both capture and display filters, but you still have to decide what you're looking for, in terms of protocol, address, etc..