5 Sep
1997
5 Sep
'97
5:56 p.m.
In message <F8F9425FD8@ccstaff.cc.ukans.edu>, DAVE NORDLUND writes:
Likewise, not all broadcast adresses necessarily end with .255, so filtering .255 won't help anyway in the presence of something like a /25 with a X.X.X.127 broadcast.
Agreed but it is not easy for a hacker to determine CIDR masks. It
I'm sorry, but that's naive. Unless you've taken steps to prevent it, or you're just lucky, it's trivial to find out a lot of things. Your mail server, for example, has a mask of 0xFFFFFF00. Another network at ukans.edu apparently has a mask of 0xFFFFFC00, and another is 0xFFFFF800. :: Mike ::