Connecting to RDS Postgres from remote machine

Question

I have configured an RDS Postgres micro instance for testing but am having problem connecting. I have created a security group and allow all hosts (0.0.0.0/0) by default to

Answer 1

My company's firewall had blocked outgoing traffic to the default postgres port, 5432. I didn't realise this until I tested the port using netcat in a terminal window, as follows:

nc -zv portquiz.net 5432

Hopefully this saves someone half a day of messing around with AWS security groups.