Best rule setting for DigitalOcean firewall

May 2, 2018 1.2k views
MySQL Ubuntu 16.04

I have a MySQL droplet that just can only be accessed by other droplets through a specific port and accessed externally via SSH only.

What is the best rule for the DigitalOcean firewall in this case (inbound / outbound) ?

1 Answer

Just keep the inbound and outbound on 3306. Keep inbound on port 22 (ssh)

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