Latest LQ Deal: Complete CCNA, CCNP & Red Hat Certification Training Bundle
Go Back > Forums > Linux Forums > Linux - Networking > Linux - Wireless Networking
User Name
Linux - Wireless Networking This forum is for the discussion of wireless networking in Linux.


  Search this Thread
Old 07-23-2006, 11:21 AM   #1
LQ Newbie
Registered: Sep 2003
Posts: 8

Rep: Reputation: 0
Intercept 802.3 packets on egress and redirect until tagged


I've moved into a giant mill building and wish to consider offering free internet to the unwashed masses. Yes, I know this sounds foolish and possibly even legally insane, but I absolve anyone from their advice.

However, the cynic in me knows that people are often bad, and so before allowing the optimist in me to offer forth this splendor of free internet (via 802.11something, of course), I wish to redirect any new MAC address first to a webpage on my linux NAT router, with the usual blurbs, "I promise I will not kill anyone". A checkbox and submit button later, and they're allowed to continue on.

The web part is obviously fairly easy. Assuming I know how to tag a MAC address as "good" or "bad" at the userlevel, how might I do the redirect at layer 2?

So people are going to be coming in through the wifi bridge. They spit out onto my lan with their own MAC (or maybe they aggregate through something before getting to me. Either way, it's granular to the apartment, and apartments have only a person or two, so I don't care). If the MAC address is not in a list, anything on the web needs to go to a local IP. Anything not on the web just doesn't work. Once they view the page and submit, their MAC gets into the system and all of a sudden they can browse the web (for a while). The other things still stay magically unavailable, though. Web only is fair.

A DNS approach won't work, because they could just use their own DNS, even if I assigned them the IP via DHCP (which I'll have to). Which makes it tricky, with the limited scope of how to tackle this I have.

So, the obvious foolishness aside, does anyone have any ideas how I could implement this?

Old 07-27-2006, 05:32 PM   #2
LQ Newbie
Registered: Sep 2003
Posts: 8

Original Poster
Rep: Reputation: 0
yeah, i answered this one for myself too


80211, bridge, free, mac, osi, redirect, register, wifi

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
iptables:redirect ports except for packets destined for fierwall(upto 256 ip) itself mmshekiba Linux - Security 1 02-02-2006 12:08 PM
OMfG TAGGED Lebanese Disease General 2 08-17-2005 03:41 PM
Egress filtering scorbett Linux - Security 2 11-03-2004 11:15 AM
RedHat 8.0 with 802.11a 802.11b and 802.11g Bryanx Linux - Hardware 2 05-23-2003 02:12 AM
aic7xxx tagged queue option. jgmarce Linux - Hardware 2 02-24-2003 09:58 AM > Forums > Linux Forums > Linux - Networking > Linux - Wireless Networking

All times are GMT -5. The time now is 07:28 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration