Hi Remy,
>
> Firewalls and network routers tend to disallow UDP broadcasts by
> default. Make sure they are enabled in the configuration.
I have disabled the firewall, and the router cannot prevent packets
being seen when they are transmitted from the same machine.
Why would my PC see packets broadcast from another PC, but NOT see
packets broadcast by the same machine?
Is there any utility that can help me track down where broadcast
packets are being blocked on the local machine?
> > I am also not sure if the relevant functionality is buried in the
> > packet capture utility, which looks like a separate program
> > (WinPCap).
>
> It is. WinPCap is a network capture library, not a program.
I'm trying to understand why Ethereal sees the broadcast packets, but
my application does not. Does Ethereal/WinPCap talk directly to the
card to obtain a copy of the packets being txd/rxd, while the stack
that Indy is using comes after the firewall has got involved?
Thanks
Ian
