On Mon, Jan 21, 2002 at 05:53:16PM -0500, Stephen Griffin wrote:
I'm curious about how many networks completely filter all traffic to any ip address ending in either ".0" or ".255".
I heard recently that Windows 2000 will refuse to send packets to addresses with the least-significant octet 255, if the most- significant octet indicates the address lies in a pre-CIDR class C. So, for example, 192.168.0.255 would be unreachable from a windows 2000 machine, regardless of the fact that it might be a legitimate host numbered within 192.168.0.0/23. This seems like a strange design decision for windows 2000, if it's real. But, if it *is* true, the answer to your question "is this kind of filtering common" might be a strong "yes", at least in the Microsoft-populated extreme network edge. Joe