On Jan 3, 2014, at 7:52 PM, Owen DeLong <o...@delong.com> wrote:

> Well… Sure, 15 years after DHCP attacks first started being a serious 
> problem… I doubt it will take anywhere near 15 years for RA guard on by 
> default to be the norm in switches, etc.

I count over a dozen ethernet switches in my home that do not have DHCP guard.  
Indeed, half of them do not have a management interface at all.  Even my 
"business class cable modem" does not implement DHCP guard on it's integrated 
switch.

I also don't know of a single device, from any vendor, that turns DHCP guard on 
by default.  I'd appreciate pointers if there is one.

I know a half dozen people sent some form of "don't do that" when I gave the 
example of plugging in a "rogue" router with my corporate scenario.  Maybe in a 
corporate scenario that's plausible, there will be intelligent admins (ha!).  
What happens when Joe Home User buys a new Linksys and wants to plug it in to 
get a firmware update before installing it?  Are we really supposed to expect 
that every Joe Homeowner understands RA Guard and configures it for their home 
network?

-- 
       Leo Bicknell - bickn...@ufp.org - CCIE 3440
        PGP keys at http://www.ufp.org/~bicknell/






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