On Wednesday 21 July 2004 14:37, Benjamin J. Weiss wrote: >On Wed, 21 Jul 2004, Gene Heskett wrote: [...] >> I was under the impression it should be unique globally. Is this >> not a piece of every tcp packet sent? In which case is it mangled >> by iptables somehow? Its set to mangle, and any of these three >> machines has network access with my setup, and I'm invisible to an >> nmap scan. > >MAC addresses are layer 2, not layer 3. This means that they're > used on the same subnet, but don't cross a router. IIRC, MAC > addresses don't cross switches either, only hubs or bridges. Oh, in that case I'm home free since there is a netgear switch between me and the firewall box. >If you use a sufficient level of randomness (or, heck, use a vendor > code (the first three bytes) that hasn't been used yet) then you > should be able to plug in to any network without issue. > >If you're only using this box at home, then just ensure that you're > not using a MAC address that's already in use on your network. > >Ben Great Ben, and thanks. But what if somebody wants to make a web server out of one of these boards. Seems like they'd at least have the potential for trouble. It even smells bad to me in that case. I need to see if there is a newer bios for this board, so on the odd chance (yeah, I know, someplace between slim and point double ought zip) that it might be fixed if I update it, this ones version 00, always bad news IMO. Yes, theres a considerably newer one I just grabbed. :-). Reboot time I believe, as soon as I put it on a floppy. -- Cheers, Gene There are 4 boxes to be used in defense of liberty. Soap, ballot, jury, and ammo. Please use in that order, starting now. -Ed Howdershelt, Author Additions to this message made by Gene Heskett are Copyright 2004, Maurice E. Heskett, all rights reserved.
