Not quite ... Remember ntop sniffs other people's DNS queries and caches the responses... (run dumpdnsCache or dumpgdbm on dnsCache.db).
Once it has the data, ntop can do the 'reverse' lookup. -----Burton -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, January 18, 2005 12:00 PM To: [email protected] Cc: [EMAIL PROTECTED]; [email protected] Subject: RE: [Ntop-dev] How can ntop resolve DynDNS hosts? DynDNS does forward look-ups only. The PTR resolution must be provided for by the address owner. Typically a Broadband provider of some sort. The way it works is that the resolver asks who owns the PTR record for the address given. That is often an ISP or a large corporation. -- J. Eric Josephson Director of Network and System Operations 978-720-2159 mailto:[EMAIL PROTECTED] Wolfgang Hennerbichler To: [email protected] <[EMAIL PROTECTED]> cc: Sent by: Subject: RE: [Ntop-dev] How can ntop resolve DynDNS hosts? ntop-dev-bounces@ unipi.it 01/18/2005 12:27 PM Please respond to ntop-dev On Tue, 2005-01-18 at 11:21 -0600, Burton Strauss wrote: > There's nothing odd about it. DynDNS type services EXIST to provide > name resolution, of course ntop can resolve it! You misunderstood me. I wrote about reverse-DNS-lookups, which is not so obvious to me. Ntop can only be in the knowledge of my IP-Address, not my A record. I'm talking about PTR records, that DYNDNS doesn't provide, I guess. > -----Burton Wolfgang > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf > Of Wolfgang Hennerbichler > Sent: Tuesday, January 18, 2005 10:56 AM > To: [email protected] > Subject: [Ntop-dev] How can ntop resolve DynDNS hosts? > > Hi! > > I've found out, that ntop is able to resolve the dyndns record (via a > reverse-DNS lookup(!)) of my laptop - how is this possible? > I've just had a quick glance at the source code, but didn't find > anything - > I am really interested how this is done - so if somebody could give me > a hint - I'd appreciate that! > > Thank you! > Wolfgang > > _______________________________________________ > Ntop-dev mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-dev > > _______________________________________________ > Ntop-dev mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-dev > _______________________________________________ Ntop-dev mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-dev _______________________________________________ Ntop-dev mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-dev _______________________________________________ Ntop-dev mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-dev
