Re: [Ethereal-users] Capture media page online

["Justin C. Walker" <justin@xxxxxxx>]

On Monday, September 2, 2002, at 05:55 , Guy Harris wrote:

> On Mon, Sep 02, 2002 at 05:42:10PM -0500, Justin C. Walker wrote:
> > Question: why does the page have a self-referential link?  The top sez
> >    [   Supported Capture Media    |   Home   ]
> > with the first link pointing to the page it's on.
>
> Because, unlike some other pages, e.g. the Download page, it has only
> one section, so the links at the top, which take you to various sections
> on the page, don't do anything interesting (unless your browser window
> is *really* short, so that the links *and* the table don't show up on
> the same screen, in which case that link will scroll forward to show you
> the top of the table).

Ah.  Thanks for the clarification.

> > For Mac OS X:
> >    Ethernet - yes
> >    802.11 - cooked mode only (AFAIK); the driver is closed-source.
> >    Loopback - yes
> >    Serial (PPP) - yes

Updates:
  802.11 is indeed cooked only
  Serial (PPP) is cooked only

> I suspect those answers apply to all the BSDs, except for 802.11, where
> you can do raw 802.11 "monitor mode" captures with the Cisco Aironet
> card if you have FreeBSD 4.6 or later.
>
> (The other free-software BSDs will probably eventually support raw-mode
> 802.11 captures on at least some cards, and FreeBSD will probably
> eventually support it on more cards as well.)

Agreed.  Support for "raw" access for 802.11 is a function of the drive 
(and the card, I suppose).  For Airport, the driver is closed-source, so 
it depends on what Apple decides to do.  For PPP, the source is open, so 
the ambitious could provide raw access.

Regards,

Justin

--
Justin C. Walker, Curmudgeon-At-Large  *
Institute for General Semantics        |   If you're not confused,
                                       |   You're not paying attention
*--------------------------------------*-------------------------------*