Joe Touch wrote: > Gary E. Miller wrote: ... >> Barring that, please name ONE switch, or cite ONE credible reference >> source, where arpspoofing is prevented at the switch by any means short >> of harcoding the MACs. > > Practical != economical. Further, there are MACs which are hardcoded > (i.e. to prevent overwrite of MAC addresses). PS - as I also raised on private email earlier, some ISPs definitely hardcode which MAC can attach to a port (i.e., they lock on the first one that gets there, and prevent subsequent ones until there's an override). Specific case: Santa Barbara, Cox ISP.