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This is not necessarily true. .255 and .0 are broadcast and network addresses based on how your network is subnetted. If I am running a 22 bit mask or 255.255.252.0, I would have valid host addresses at .0 and .255: Example. 192.168.100.1 /24 Valid hosts from 192.168.100.1-192.168.100.254 with .0 for network and .255 for broadcast 192.168.100.1/22 Valid hosts from 192.168.100.1-192.168.103.254 with 192.168.100.0 as the network and 192.168.103.255 as the broad cast address. This would leave 100.255, 101.0, 101.255, 102.1, 102.255 and 103.1 as valid host addresses, but potentially not scanned. (OK, it would probably be bad practice to make a habit of putting devices at .0 and .255, but still...) Conversely, if I am running a network with a 25 bit mask, my network would still be .0 but my broadcast address would be .127 I think this may be a case where Internet Scanner is being smarter than it should. Eddie ----- Original Message ----- From: "Evans, Mark" <[EMAIL PROTECTED]> To: "'Levinson, Paul'" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Wednesday, April 17, 2002 10:16 AM Subject: RE: ISS Internet Scanner question > > TO UNSUBSCRIBE: email "unsubscribe issforum" in the body of your message to > [EMAIL PROTECTED] Contact [EMAIL PROTECTED] for help with any problems! > -------------------------------------------------------------------------- -- > > The address are valid, but are impractical for scanning. A .255 is the > broadcast address for a particular network/subnet. You can't assign this to > a device. A .0 is the actual address of the network, as as such, can't be > "legally" assigned to a host/machine.
