Hi, Recently I had a situation where in I was required to create a secure connection between mongodb server (mongod) and mongodb client (mongo). In order to establish the secure connection there is a need to start Mongodb in the following manner: mongod --sslOnNormalPorts --sslPEMKeyFile <Location of PEM file of mongod> If the above command is run is run on the free version of Mongodb then following error is generated: error command line: unknown option sslOnNormalPorts use --help for help The main cause of this error is due to the fact that the normal free version of Mongodb does not support SSL functionality by default. In order to use SSL functionality following two methods could be used: 1. Build Mongodb from its source using SSL option. 2. Use Enterprise version of mongodb. If you a looking forward to use the Enterprise version then there is no need to worry about SSL as this option will be by defaul...