Networks: CIDR – Subnet Mask – Number of addresses

CIDR SUBNET MASK # ADDRESSES /0 0.0.0.0 4294967296 /1 128.0.0.0 2147483648 /2 192.0.0.0 1073741824 /3 224.0.0.0 536870912 /4 240.0.0.0 268435456 /5 248.0.0.0 134217728 /6 252.0.0.0 67108864 /7 254.0.0.0 33664432 /8 255.0.0.0 16777216 /9 255.128.0.0 8388608 /10 255.192.0.0 4194304 /11 255.224.0.0 2097152 /12 255.240.0.0 1048567 /13 255.248.0.0 524288 /14 255.252.0.0 262144 …

SSL Certificates – How to request and create SSL Certificates with OpenSSL

Install OpenSSL (Windows) Follow the following instructions to install and setup OpenSSL on a Windows computer. Ensure that the Microsoft Visual C++ 2008 Redistributable Package (x86) is installed on the system on which you want to generate the requests. To download the package, see the Microsoft Download Center. Download the Shining …

Dropbox

  Dropbox is a file hosting service operated by Dropbox, Inc. which uses cloud computing to enable users to store and share files and folders with others across the Internet using file synchronization. There are both free (2GB) and paid services, each with varying options; the service is cross-platform, with client …