Why SSH works only on the standard port?

April 21, 2015 3.8k views
Security Ubuntu Getting Started
yutkin
By:
yutkin

When I change the Port in /etc/ssh/sshd_config I get “Connection refused” error. When Port is 22 I can connect to server without any problems. How to fix it?

5 comments
  • ryanpq MOD April 21, 2015

    After changing the ssh port are you restarting your ssh service?

    service ssh restart

    Unless the service is restarted the changes to your configuration will not take effect.

  • yutkin April 21, 2015

    Of course, I restart ssh but it has not affected.

  • Zeroprox April 21, 2015

    Did you open the new port your using in your firewall?

  • yutkin April 21, 2015

    I don’t use firewall, It is a new droplet. I follow step by step of this tutorial and earlier all work properly.

    Initial Server Setup with Ubuntu 14.04
    by Justin Ellingwood
    When you start a new server, there are a few steps that you should take every time to add some basic security and set a solid foundation. In this guide, we'll walk you through the basic steps necessary to hit the ground running with Ubuntu 14.04.
  • Show 1 more comments
2 Answers
yutkin April 23, 2015

up

Reply
joelerr December 10, 2017

For others that have this problem: Try using the IP address.
I had just transferred the domain to cloudflare and cloudflare blocks everything except http/s traffic.
To fix that, use the IP address directly or add a ssh.example.com entry to your DNS records. Or just use your local ~/.ssh/config to set your Host setting to your IP.

Don’t forget firewalls:

  • UFW firewall rules on server.
  • Server Pilot Firewall
  • Local Firewalls ( antivirus, windows)
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