DNS was [Gllug] IPSec

[Tom Gilbert]

* William Palfreman (william at palfreman.com) wrote:
> On Tue, 12 Feb 2002, Tom Gilbert wrote:
> 
> > * Richard Cottrill (richard_c at tpg.com.au) wrote:
> > > I'm curious; what's a 'large' DNS query? Is that where you store a HUGE
> > > FQDN, or when you store other stuff in a DNS (like keys for IPSec)? Is it
> > > only appropriate for lookups or for reverse lookups as well?
> > >
> > > Apart from name/IP data and IPSec stuff (which initially surprised me) what
> > > else do people put in DNS? What are the limitations?
> >
> > The maximum DNS response packet size is 512 bytes afair.
> 
> For udp.  A tcp zone transfer could be much bigger, and I think
> that is what meant here.  A huge query would by say when a sites main
> slave host restarts and loads up the lot.

Read my mail again, especially the bottom 2 paragraphs. UDP is used for
a response, tcp is used if the UDP response has the truncated flag set.

Tom.
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