Re: Dual-Homed/Triple-Subnet Bridge Challenge

This is fantastic assistance Grant.

I am chomping at the bit to get this up and running when I get back
on-site.
I will report back when job is complete.

Just a by-the-way on this promiscuous mode business...

I did in fact understand that modern switches (unlike old hubs) monitor
MAC
activity and learn where source and destination ports reside.
However, I assumed that if a NIC is placed in promiscuous mode, then
this
fact will somehow be communicated to the switch, perhaps in some status
bit
in packet headers, and the switch will then send all traffic to the NIC
port.
Obviously, from what you say, this assumption is incorrect and I need
have
no concerns about my server getting overloaded with extraneous traffic.

But that leads me to ask the question:
How do Linux network sniffing utilities (which also use promiscuous
mode)
manage to pick up all traffic?


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