[isf-wifidog] Dynamic DNS : The ultimate solution

Mer 8 Mar 13:07:26 EST 2006

Sorry, the appropriate library is :  Net::DNS::Update

http://search.cpan.org/~olaf/Net-DNS-0.57/lib/Net/DNS/Update.pm

It allows you to do the dynamic updates of a dns server.

Sorry for the confusion... Rein

On 3/8/06, Rein Petersen <rein.petersen at gmail.com> wrote:
>
> Hey François,
>
> That'll work for HTTP for sure - or whatever ports you have Apache
> answering - it would definately let webcams be easily accessible remotely
> (with the appropriate port-forward on the router). But other services (say
> PCAnywhere or something like that) would still rely on DNS to map a domain
> name to an ip address.
>
> A further elaboration of Mina's idea to utilize your existing DDNS service
> would be to implement a trigger on the table that captures the ip address of
> the heartbeat and, on change, call a perl script that implements the
> Net::DNS perl module :
>
> http://search.cpan.org/~olaf/Net-DNS-0.57/lib/Net/DNS.pm<http://search.cpan.org/%7Eolaf/Net-DNS-0.57/lib/Net/DNS.pm>
>
> The Net::DNS library allows you to craft the appropriate DNS request to
> add/update a dynamic host. Please excuse my linux ignorance, but I would
> assume you'd want to spawn a new thread/process so your perl ddns-updating
> script doesn't hold up the database update that caused the trigger while it
> is updating a remote dns server - I know there is some complication with
> multithreading and linux but I'm totally novice when it comes to linux.
>
> Of course this is all just theoretical but, I'd be willing and interested
> in writing the perl script that updates DDNS if the ISF folks thought it was
> a worthy venture. Regardless, it's fun to talk about it.
>
> Rein
>
>
>
> On 3/8/06, François Proulx <fproulx at edito.qc.ca> wrote:
> >
> > Here is a potential solution for managing dynamic DNS entierely from the
> > Wifidog back-end.
> > Create an Apache name-based VirtualHost with the ServerAlias parameter
> > set to something like
> > ServerAlias *.hotspots.ilesansfil.org
> >
> > See Apache doc here :
> > http://httpd.apache.org/docs/1.3/mod/core.html#serveralias
> >
> > So, there would be a proxy PHP script that would be called and look if
> > the first part of the URL matches the name of a hotspot in the database,
> > maybe even do soundex or metaphone searches then redirect to the right
> > portal page .... So that's pretty simple to do and we can specify the alias
> > in the Wifidog admin back-end
> >
> >
> > On 8-Mar-2006, at 11:19 , Max Horváth wrote:
> >
> > Well, the question is - can you provide a tutorial on how to run our own
> > DDNS server?
> > Cheers, Max!
> >
> > Am 08.03.2006 um 16:24 schrieb Mina Naguib:
> >
> >
> > On 8-Mar-06, at 8:41 AM, Rein Petersen wrote:
> >
> > Hi Max, Hi Benjamin,
> >
> > Benjamin's idea of using a client to update an existing dynamic dns
> > service is probably the easiest. You could delegate a subdomain of
> > ilesansfil.org (how about " venues.ilesansfil.org") to a remote dnydns
> > service so your existing dns is not affected, then have a trigger on the db
> > that uses the client to update the remote dyndns server on change of an ip
> > address.
> >
> >
> > The DNS server handling ilesansfil.org already supports dynamic DNS
> > entry updating ;-) No need for anything fancy to be done.
> >
> >
> > I had imagined something a little more elaborate - delegating a
> > subdomain to your auth server and running a perl sockets service that
> > answers only host lookups on port 53. Bothering with the entire BIND DNS
> > spec would be unecessary (don't need reverse or MX queries). DNS speaks
> > binary on the wire so it is still a little elaborate but not impossible
> > (I've worked on a resolver for a mail server called Lumisoft Mail).
> >
> >
> > Entirely doable (done it before as well), but a bit overkill :-)
> >
> >
> > I think Benjamin's plan may be easier to implement.
> >
> > Rein
> >
> > On 3/8/06, Benjamin Crulli <lostocean at gmail.com > wrote:
> > >
> > > These are the three dyndns GNU/Linux softwares i know about.
> > > <a href=" http://sourceforge.net/project/showfiles.php?group_id=65917">updatedd</a>
> > >
> > > <a href="http://www.funtaff.com/software/addns.pl">Addns.pl</a>
> > > <a href=" http://ipcheck.sourceforge.net/ ">ipcheck.py</a>
> > >
> > > On 3/8/06, Max Horváth < max.horvath at maxspot.de> wrote:
> > > > This feature would be nice ... but I think we won't be able to do it
> > > by just
> > > > extending the auth server.
> > > >
> > > > In fact I still don't know which software exists for linux to
> > > provide a
> > > > DynDNS service :( ...
> > > >
> > > > Did you already do some research?
> > > >
> > > > Cheers, Max!
> > > >
> > > >
> > > > Am 08.03.2006 um 05:11 schrieb Rein Petersen:
> > > >
> > > > Hi All,
> > > >
> > > >  Considering that Wifidog clients heartbeat frequently to the auth
> > > server, I
> > > > was wondering if anyone had considered rolling Dynamic DNS service
> > > into
> > > > Wifidog auth server.
> > > >
> > > >  Then you could resolve dynamic ip addresses to names like
> > > > boodhabar.ilesansfil.org
> > > >
> > > >  This might be helpful for venues that want to run their own
> > > services or
> > > > have a webcam installed.
> > > >
> > > >  Just a crazy idea but I think it would be cool.
> > > >
> > > >  Rein
> > > >
> > > > _______________________________________________
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> > > > WiFiDog at listes.ilesansfil.org
> > > > http://listes.ilesansfil.org/cgi-bin/mailman/listinfo/wifidog
> > > >
> > > > _______________________________________________
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> > > >
> > > >
> > > >
> > >
> > >
> > > --
> > > Ben Crulli
> > > _______________________________________________
> > > WiFiDog mailing list
> > > WiFiDog at listes.ilesansfil.org
> > > http://listes.ilesansfil.org/cgi-bin/mailman/listinfo/wifidog
> > >
> >
> >
> >
> > --
> > Rein Petersen MCP MCP+I MCSE MCDBA MCAD
> > Software Engineer_______________________________________________
> > WiFiDog mailing list
> > WiFiDog at listes.ilesansfil.org
> > http://listes.ilesansfil.org/cgi-bin/mailman/listinfo/wifidog
> >
> >
> > _______________________________________________
> > WiFiDog mailing list
> > WiFiDog at listes.ilesansfil.org
> > http://listes.ilesansfil.org/cgi-bin/mailman/listinfo/wifidog
> >
> >
> > _______________________________________________
> > WiFiDog mailing list
> > WiFiDog at listes.ilesansfil.org
> > http://listes.ilesansfil.org/cgi-bin/mailman/listinfo/wifidog
> >
> >
> >
> > _______________________________________________
> > WiFiDog mailing list
> > WiFiDog at listes.ilesansfil.org
> > http://listes.ilesansfil.org/cgi-bin/mailman/listinfo/wifidog
> >
> >
> >
>
>
> --
> Rein Petersen MCP MCP+I MCSE MCDBA MCAD
> Software Engineer
>

--
Rein Petersen MCP MCP+I MCSE MCDBA MCAD
Software Engineer
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