[Pdns-users] Alphabetic Case support (?)
cmouse at youzen.ext.b2.fi
Sat Oct 10 17:14:34 UTC 2015
Please file a feature request at https://github.com/PowerDNS/pdns/issues
so this might happen.
On Sat, Oct 10, 2015 at 05:55:49PM +0100, Federico Olivieri wrote:
> Hi guys!
> Any feedback from that? By the way...Well done in Berlin!!!
> 2015-10-09 13:59 GMT+01:00 Federico Olivieri <lvrfrc87 at gmail.com>:
> > Hi all,
> > I was running a DNS test (from https://www.grc.com/dns/dns.htm) on my DNS
> > server. From the result I could see the "Alphabetic Case" test. I din't
> > know about this feature and I googoled. That is what the website says:
> > - *Alphabetic Case:*
> > The DNS system is not sensitive to alphabetic case, so the domain Ã¢ÂÂ
> > WWW.GRC.COMÃ¢ÂÂ is identical to Ã¢ÂÂwww.grc.comÃ¢ÂÂ. DNS is designed to *ignore
> > but preserve* the alphabetic case used in queries and replies. This
> > creates an opportunity for a DNS resolver to add additional unknown bits of
> > Ã¢ÂÂentropyÃ¢ÂÂ to its queries by randomly changing the case of any alphabetic
> > characters in the queried domain name. When replies are received, only the
> > valid replying nameserver that received the mixed-case query could know the
> > proper case for its reply. No spoofing server would know. This would give a
> > clever resolver another way to reject spoofed replies. We know of no
> > nameservers that are deliberately mixing case in this way, but through this
> > test we are helping you to keep your eye out for any.
> > I had a look to PDNS website but I didn't find any relevant information to
> > understand if pdns support this feature (from the test result seems not
> > supported)
> > Do you have extra info about that?
> > Thanks
> > Federico
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