Re: Blocking/allowing association by mac address?
"M. Warner Losh" <[email protected]> Mon, 25 Nov 2002 09:45:10 -0700 (MST)
| Newsgroups | gmane.network.wireless.bsd.general |
|---|---|
| Message-ID | <[email protected]> |
In message: <3DE1E0F9.30102.1783C5@localhost>
"Mike Avery" <[email protected]> writes:
: I didn't see mac address blocking in the ipfw man file,
: however, I do know ipfw would allow me to block or allow
: based on IP addresses. While not as solid as mac
: addresses, it would do. (And yes, I know that mac
: addresses can be changed (I've been doing that since
: the 80's), and that IP addresses can be changed too...
: but it's a start, and probably good enough for this small
: town.)
On my -current box:
{ MAC | mac } dst-mac src-mac
Match packets with a given dst-mac and src-mac addresses, speci-
fied as the any keyword (matching any MAC address), or six groups
of hex digits separated by colons, and optionally followed by a
mask indicating how many bits are significant, as in
MAC 10:20:30:40:50:60/33 any
Note that the order of MAC addresses (destination first, source
second) is the same as on the wire, but the opposite of the one
used for IP addresses.
Warner
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