when the last octet is a prime number so it first bit will always be 1 so u can put access list like this access-list 101 deny 192.168.1.1 255.255.255.254 192.168.1.0 0.0.0.255 Best Regards, Mohammed Saro Network Engineer ----- Original Message ----- From: "Alejandro Pelaez" To: Sent: Monday, July 30, 2001 9:57 AM Subject: access list w/ prime numers [7:14117] > Hola All! > > I want to set up an access list that do the following: > deny all packets from subnet 192.168.1.0 with last octect a prime numer. > > Alejandro Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=14120&t=14117 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]