no route to host on new droplet

This is weird behavior, as I am experiencing this right now on a Fedora23 droplet. The firewalld tool lists the interfaces and services in the default firewall zone as open. However, the ports are closed. This might have to do with the empty “Sources” field:

public (active)
  target: default
  icmp-block-inversion: no
  interfaces: eth0 eth1
  sources: 
  services: dhcpv6-client http https imap imaps smtp smtps ssh
  ports: 
  protocols: 
  masquerade: no
  forward-ports: 
  sourceports: 
  icmp-blocks: 
  rich rules: 

Manually adding the specific port resolves this issue for now:

firewall-cmd --add-port=123333 --permanent

“Is it possible that your local network or ISP filter port 22? Have you tried setting a custom SSH port?”

+1 for this. You will want to do that anyway.

to change port:

sudo nano /etc/ssh/sshd_config

You will see the place where it says the port 22…change that to whatever, then ctrl X and then:

sudo service ssh reload

Then, just to be sure, run (if your alt port was 2010):

 sudo iptables -A INPUT -p tcp -d 0/0 -s 0/0 --dport 2010 -j ACCEPT

Then check your ports here: http://www.yougetsignal.com/tools/open-ports/