2
Port is open locally, but not externally
Neo4j is a graph database with a browser and REST interface.I need to start a second instance of neo4j server. I would like to run the process a user with normal privileges.
The first instance of neo4j opens the default port for neo4j, 7474, and runs and HTTP server on it. I can reach it with a Web browser from another machine. That's great.
The second instance is configured to use a different port, 7484. I can start the server and reach it locally:
>lynx http://localhost:7484
That's great too.
However, if I use another machine and try to browse http://my-neo4j-server:7484, the browser times-out and never establishes a connection.
If I run netstat on the server, it shows that it is listening on that port.
>netstat -tulpn
...
tcp6 0 0 :::7484 :::* LISTEN 8552/java
I tried:
>sudo ufw disable
I checked IP tables:
>sudo iptables -L
and there are no entries in the tables.
What am I failing to do?
Note: I'm running the Amazon Linux AMI on ec2.
ahoffer
Posted 2014-05-09T00:08:46.083
Reputation: 245
Did you intend to use IPv6 exclusively, not the more common IPv4? If you want to go IPv6, you need a special DNS setup with AAA records. – Eugen Rieck – 2014-05-09T00:54:55.597
Did you open the Amazon Security Group for the new port? – laurent – 2014-05-09T03:46:43.287
@laurent. You were correct. I forgot that EC2 has its own security rules that must be set. If you want to answer this question, I will accept your answer. – ahoffer – 2014-05-09T21:05:43.470