> > and spoofing an address on the net.
> Since it is relatively easy to change a MAC address (am less ignorant now 8*),
> it appears that the possibility of two nodes with the same address on coax
> is possible. With twisted pair there is another possibility if you have an
> intelligent hub that can be set to only accept packets from a particular
> MAC on a particular line. I believe 3Com and HP both are marketing hubs
> with this capability.
Cisco routers, in their bridge filter more, also can select
only a specific MAC address or range of addresses.
There really is a broader issue here. In the IPng autoconfiguration
list, there is at least some sentiment (that I agree with, and
I think is growing), that MAC addresses should not be changeable.
>From the security standpoint, what is the feeling that it may
be desirable to be able to order variants of drivers that have
the local configuration of MAC address disabled? I certainly
lean that way.
DECnet networks MUST at present modify MAC addresses, and Novell
and Banyan routers MAY modify them. These certainly are areas of