Al, CIDR 35.8.0.0/13, or 35.8.0.0 with subnet mask of 255.248.0.0 should meet your requirement. IP range is 35.8.0.0 - 35.15.255.255, which, I believe, is inclusive of all of MSU's allocated IP address space. Regards, John Fishbeck Physical Plant Computer Systems & Networking Group 2-0228 From: Al Puzzuoli [mailto:[log in to unmask]] Sent: Tuesday, February 22, 2011 4:46 PM To: [log in to unmask] Subject: [MSUNAG] Which IP Ranges to Include in License server Firewall Rule? Hi, I basically want to create a rule that will open some ports on a certain license server to virtually any computer, so long as it is connecting from an on campus or VPN IP. Which iP ranges should I include in order to make that happen? Thanks, --Al