Here are some handy one liners that will allow you to check the number of connections to a port: #check port 25 netstat -an | grep “:25 “| grep ESTABLISHED | awk ‘{print $4″t”$5}’ | sort -n -k1 #check port 80 netstat -an | grep “:80 “| grep ESTABLISHED | awk ‘{print $4″t”$5}’ | sort …

It’s often required to block access to files in a folder by the file extension. For example – customer has an outdated version of oscommerce that they refuse to upgrade. It requires the images folder to have the permissions 777. The only thing that should be stored in the folder is images. To ensure a …