nanog mailing list archives
Re: Breaking the internet (hotels, guestnet style)
From: Mark Andrews <marka () isc org>
Date: Wed, 09 Dec 2009 01:11:22 +1100
In message <20091208.101453.74674743.sthaug () nethelp no>, sthaug () nethelp no writes:
This really should be a DHCP option which points to the authentification server using ip addresses. This should be return to clients even if they don't request it. Web browers could have a hot-spot button that retrieves this option then connects using the value returned.Unfortunately, that's not how DHCP works. If you send the client a DHCP option which the client has not requested, you have no idea if the client will use (or for that matter even *understand*) the option. Steinar Haug, Nethelp consulting, sthaug () nethelp no
It can still parse and skip it from the the DHCP response as every option contains its own length. Initially clients will ignore it but over time it will be supported on the client side. This is a much better way than intercepting DNS queries and returning respones that will just be ignored by validating and iterative resolvers. Something like http://1.2.3.4/terms.html or http://[2001::1]/terms.html doesn't require that everthing be intercepted. Just block until acceptance. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka () isc org
Current thread:
- Re: Breaking the internet (hotels, guestnet style), (continued)
- Re: Breaking the internet (hotels, guestnet style) Paul Timmins (Dec 07)
- Re: Breaking the internet (hotels, guestnet style) Brielle Bruns (Dec 07)
- Re: Breaking the internet (hotels, guestnet style) Jared Mauch (Dec 07)
- Re: Breaking the internet (hotels, guestnet style) Suresh Ramasubramanian (Dec 07)
- Re: Breaking the internet (hotels, guestnet style) Andrew Cox (Dec 07)
- Re: Breaking the internet (hotels, guestnet style) Suresh Ramasubramanian (Dec 07)
- Re: Breaking the internet (hotels, guestnet style) Andrew Cox (Dec 07)
- Re: Breaking the internet (hotels, guestnet style) Joe Greco (Dec 07)
- Re: Breaking the internet (hotels, guestnet style) Mark Andrews (Dec 07)
- Re: Breaking the internet (hotels, guestnet style) sthaug (Dec 08)
- Re: Breaking the internet (hotels, guestnet style) Mark Andrews (Dec 08)
- Re: Breaking the internet (hotels, guestnet style) Andrew Cox (Dec 08)
- Re: Breaking the internet (hotels, guestnet style) Owen DeLong (Dec 08)
- Re: Breaking the internet (hotels, guestnet style) Andrew Cox (Dec 08)
- Re: Breaking the internet (hotels, guestnet style) Owen DeLong (Dec 08)
- Re: Breaking the internet (hotels, guestnet style) Jens Link (Dec 09)
- Re: Breaking the internet (hotels, guestnet style) Owen DeLong (Dec 09)
- Re: Breaking the internet (hotels, guestnet style) - path asumption bmanning (Dec 09)
- Re: Breaking the internet (hotels, guestnet style) - path asumption Christopher Morrow (Dec 09)
- Re: Breaking the internet (hotels, guestnet style) Stephen Sprunk (Dec 09)
- Re: Breaking the internet (hotels, guestnet style) Owen DeLong (Dec 09)