I want to add Ubuntu iptables entries so only the following can access MySQL server on my droplet: my Rails app on that same droplet should be able to get, post, update, delete, etc data on MySQL on that same droplet I should be able to SSH to my droplet and use MySQL. What iptables entries will make these secure restrictions possible? Thanks in advance!

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Question

What iptables entries for secure MySQL?

Posted July 5, 2013

I want to add Ubuntu iptables entries so only the following can access MySQL server on my droplet:

my Rails app on that same droplet should be able to get, post, update, delete, etc data on MySQL on that same droplet
I should be able to SSH to my droplet and use MySQL.

What iptables entries will make these secure restrictions possible?

Thanks in advance!

greglafrance007

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pablo • July 8, 2013

Make sure that in /etc/mysql/my.cnf you have the following entry: <pre>bind-address = 127.0.0.1</pre>

Kamal Nasser • July 5, 2013

MySQL listens on the loopback interface by default so outer access to port 3306 will not be allowed (it will timeout as there’s nothing listening publicly on port 3306). You don’t have to set up any iptables rules as it’s pretty much secure by default as long as there are no users that are able to connect without a password.

greglafrance007 • July 5, 2013

Yes, everything is on the same droplet.

Kamal Nasser • July 5, 2013

Are they on the same droplet?