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 From:  Dana Spiegel <dana at sociableDESIGN dot com>
 To:  "Mitch (WebCob)" <mitch at webcob dot com>
 Cc:  "David Cook" <david dot cook at jetpress dot com>, m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] captive portal support - patent problem?
 Date:  Tue, 27 Jan 2004 13:09:22 -0500
In fact, NoCat DOES have something to say about it. Basically, we don't  
worry about it because what nomadix patented isn't used by most Captive  
Portal Technologies...

> Rob Flickenger * rob at nocat.net <mailto:rob%20at%20nocat.net>
> /Sun, 25 Jan 2004 11:31:12 -0800/
> ----------------------------------------------------------------------- 
> -
>
> I thought you might find this interesting.  Someone brought this to my  
>  attention:
>
> http://www.nomadix.com/company/pressroom/pressrelease.asp?id=PR01200401
>
> I think the critical phrase from the press release is: "This   
> redirection takes place regardless of the host computer's settings and  
>  without altering the user's browser settings."  Check out the full  
> text  of the patent:
>
> http://patft.uspto.gov/netacgi/nph-Parser?  
> Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-  
> adv.htm&r=1&f=G&l=50&d=ptxt&S1=6,636,894&OS=6,636,894&RS=6,636,894
>
> While they might like to make it sound like they've patented the   
> captive portal, they've really only patented their wacky arp   
> implementation.  They look for any machine being ARP'd for that  
> doesn't  receive a reply, and issue an ARP reply using the gateway's  
> MAC  address.  Combined with some DNS strangeness, this lets the  
> gateway  bring up a splash page even when the client requests a  
> private intranet  page, or even if they are using static IP address  
> settings rather than  DHCP.
>
> NoCatAuth does none of that.  We considered it for a while, but I  
> don't  think it's worth the effort, as it's really easy to confuse  
> both the  client and the gatway.  I still think that software  
> implementation  patents are detrimental to innovation, but this one  
> doesn't seem to  pose an immediate threat to our project.
>
> Still, it is interesting that they've gone and patented it.
>
> --Rob



sociableDESIGN  ::  www.sociableDESIGN.com
123 Bank Street, Suite 510, New York, NY 10014



On Jan 27, 2004, at 12:01 PM, Mitch (WebCob) wrote:

> The guys at nocat.net would probably know (prior art)...
>
> wonder how long they have been at it?
>
> m/
>
>> -----Original Message-----
>> From: David Cook [mailto:david dot cook at jetpress dot com]
>> Sent: Tuesday, January 27, 2004 5:39 AM
>> To: m0n0wall at lists dot m0n0 dot ch
>> Subject: RE: [m0n0wall] captive portal support - patent problem?
>>
>>
>> Could this be a problem? Article appeared on "The Register" this  
>> morning
>> (http://www.theregister.co.uk/content/59/35138.html).
>>
>> Press release from Nomadix:
>> http://www.nomadix.com/company/pressroom/pressrelease.asp? 
>> id=PR01200401
>>
>> ------------------------------------------
>>
>> Nomadix patents Wi-Fi hotspot log-in tech
>>
>> By Tony Smith
>> Posted: 27/01/2004 at 12:16 GMT
>>
>> Wi-Fi providers who redirect users' web browsers to their own log-in  
>> page
>> may soon have to cough up cash if they want to continue using the
>> technique
>> - US network access software company Nomadix has patented it.
>>
>> The patent, number 6,636,894, was granted on 21 October last year,  
>> but is
>> applicable right back to 8 December 1999. It essentially describes  
>> systems
>> that redirects portable-computer users who access a public network to  
>> the
>> host's home page, irrespective of the user's browser settings and
>> transparent to the user. The systems cover both wired and
>> wireless access.
>>
>> It also discusses the authentication and authorisation system
>> that maintains
>> user accounts and interacts with the billing system when network  
>> access is
>> not provided free of charge.
>>
>> Almost all public Wi-Fi networks - and pretty much every one of them  
>> that
>> charge users for access - operate such a methodology. No wonder  
>> Nomadix
>> describes the technique as "fundamentally essential to the success of  
>> the
>> rapidly growing Wi-Fi market".
>>
>> Nomadix customers will inherently have a licence to use the  
>> technique, but
>> WISPs who have developed their own redirection code, or have acquired  
>> it
>> from other companies, will need to ensure they have permission to use  
>> it.
>>
>> Nomadix will certainly be expecting them to. "Some [companies] copied  
>> what
>> we've done," said Nomadix CTO, co-founder and senior VP, Joel Short,
>> according to a Wi-Fi Networking News report. "We stand behind our
>> intellectual property and now we're going to encourage those folks who

>>
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