Re: DDoS attacks via SPF

In <E6193BA6-3182-11D8-85AC-000A957168EC(_at_)develooper(_dot_)com> Ask Bjørn 
Hansen <ask(_at_)develooper(_dot_)com> writes:

> On Dec 18, 2003, at 9:02 AM, wayne wrote:
>
> > In <3FE1C7BD(_dot_)9040204(_at_)foster(_dot_)cc> Mark Foster 
> > <mark(_at_)foster(_dot_)cc> writes:
> >
> > > Wouldn't doing away with the macro-char t (also) greatly reduce the
> > > ddos risk?
> > > What is t needed for, anyway?
> It could be useful if you intentionally don't want lookups to be cached.
The correct solution to the problem of not wanting stuff cached would
be to set the TTL to 1.  That way, people's DNS cache won't be flooded
with bogus entries.


-wayne

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