Network misconfigurations

Elastic Load Balancer (ELB) allows ingress access to MongoDB port 27017


Port 27017 is the default port for mongod and mongose instances. It is a security risk to expose a DB port to the public internet even though they are on a secure socket layer. Anyone on the internet can run port scanning tools, determine the open ports and launch specific attacks. It is a best practice to block public access, restrict access from specific IP addresses to port 27017 and make the connection secure.