Re: FTP site
On Sun, 17 May 1998, Nathan E Norman wrote:
> Uh, no. Most ISPs do something like "nobody.netblock.isp.com" - that's
> why the lookup fails. If they did it right, it would work everytime, no
> matter what hostname the user has set.
> Why? Well, let's examine what happens ...
> You connect to the server. The server now has your IP address. It does
> a reverse lookup on that address. It then does a FORWARD lookup on the
> answer it got from the reverse lookup. We have a NAT pool here ... so
> the IP address 220.127.116.11 might resolve to
> pc-219.pix-pool1.midco.net. Luckily for MidcoNet users :),
> pc-219.pix-pool1.midco.net does in fact resolve to 18.104.22.168. If
> it doesn't, there's not a damn thing the user can do, sorry.
Well that is true, if they are setting a PTR to a nonexistant hostname,
they have broken DNS and deserve to have all kinds of problems.
Microsoft! Which end of the stick do you want today?
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