00:01 One of the most important things we can do to make our MongoDB server safe 00:03 even if we screw up the configuration, the authentication, the encryption, all those things 00:08 is to make sure nobody can talk to it. 00:11 So we're going to do two simple things right away to lock down our server. 00:15 Obviously our web app, or whatever app, our service 00:20 whatever we're building that uses MongoDB should be able to talk to it, 00:23 and it's this probably within a data center 00:26 we could possibly get to it from our local machines, 00:28 but well do things like ssl tunnels and so on to do that, 00:31 so we won't open up any extra ports for this. 00:34 However, there's always something out there lurking, 00:37 I showed you that super scary warning at the beginning 00:40 and they're out there looking, they are saying 00:43 hey I would love to talk to the server on port 27017 the default port 00:46 or maybe 1.8 or 1.9, or 20, depending on the service you're running. 00:50 So we want to block those guys, we want to block them with the firewall 00:53 and a couple of other things. 00:56 That's what we're going to do next. 00:58 We're going to do this like I said, in Linux itself, in Ubuntu itself, 01:01 we could the cloud computing stuff like Digital Ocean just announced 01:06 this cloud firewall thing that is really probably easier 01:09 and if you're using Digital Ocean have a look at that, 01:12 but we'll do it here and it works just fine.