nanog mailing list archives

RE: {SPAM?} Re: IPv6 Deployment for the LAN


From: "TJ" <trejrco () gmail com>
Date: Sat, 7 Nov 2009 16:40:42 -0500

Device driver? Nah.  
Just use a tool (like Scapy) to just arbitrarily, easily custom-craft any
packet he|she wants ... Yes, it is that easy.


Thanks!
/TJ


-----Original Message-----
From: Richard Bennett [mailto:richard () bennett com] 
Sent: Saturday, November 07, 2009 15:37
To: Owen DeLong
Cc: Bernhard Schmidt; nanog () nanog org
Subject: Re: {SPAM?} Re: IPv6 Deployment for the LAN

It's not all that easy unless the dude has hacked the device driver.

Owen DeLong wrote:
And of course, a rogue RA station would _NEVER_ mess with that bit
in what it transmits...

Uh, yeah.

Owen

On Nov 7, 2009, at 2:41 AM, Richard Bennett wrote:

  The Wi-Fi MAC protocol has a pair of header bits that mean "from AP"
  and "to AP." In ad-hoc mode, a designated station acts as an AP, so
  that's nothing special. There are a couple of non-AP modes for direct
  link exchanges and peer-to-peer exchances that probably don't set 
"from
  AP" but I'm not sure about that.
  Adrian Chadd wrote:

On Sat, Nov 07, 2009, Bernhard Schmidt wrote:



As already said, wireless in infrastructure mode (with access points)
always sends traffic between clients through the access point, so a
decent AP can filter this.


How does the client determine that the traffic came from the AP versus
another client?



Adrian




-- 
Richard Bennett
Research Fellow
Information Technology and Innovation Foundation
Washington, DC


-- 
Richard Bennett
Research Fellow
Information Technology and Innovation Foundation
Washington, DC




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