IP Subnet Sheet

Have you ever wondered what is a /27?  Or how many IP addresses do I get to use with a /28?  Is there a use for a /31?  CIDR Subnet Mask Total IPs Usable IPs /32 255.255.255.255 1 1 /31 255.255.255.254 2 0* /30 255.255.255.252 4 2 /29 255.255.255.248 8 6 /28...

Securing Your MongoDB

Securing your MongoDB Securing MongoDB must be a top priority for system administrators right now as ransom attacks are on the rise.  If you are using MongoDB to storing data on any public facing cloud server running on Linux, then you will need to make sure you lock...