[plug] reverse DNS and IP lookup

[Christian]

On Wed, Mar 14, 2001 at 06:06:00PM +0800, Mike Holland wrote:
> What about an IP address allocation database? Reverse DNS can be faked :)

I could have sworn you were going to use a domain name to lookup the
machine with the IP allocation database on it...  If you're worried
about the reverse DNS being faked then you should be equally worried
about this. If you trust the DNS then just look up the A record and then
the PTR record and confirm that they agree.  If you don't trust the DNS
then then you need SSL (or equivalent).

Regards,

Christian.