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Saif Bechan
Asked: 2011-12-07 02:42:47 +0800 CST

Basic SSH port change not working on EC2 instance

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I am trying to change the port of SSH on an EC2 instance, but I am not getting this to work.

What I am doing is the following:

Open the file /etc/ssh/ssh_config

Uncomment and change the line Port 2345

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run the command service sshd restart

Now I can still connect to port 22. And when I run the command ssh -p 2345 localhost i get:

ssh: connect to host localhost port 2345: Connection refused

ssh

3 Answers

  1. Best Answer

    It may be a typo, but if you want to change the port that sshd listens on, you need to edit the Port setting in /etc/ssh/sshd_config, not ssh_config.

    Also, you're using two different port numbers above (2345 and 2232), but I'm sure that's a typo.

    If it's not that, could you edit into your question the output of iptables -L -n -v so we can see your firewall rules?

    • 9

  2. ssh_config is the SSH client configuration file.

    sshd_config is the SSH daemon (server) configuration file.

    So, if you want to change the port for the ssh server You have to edit the sshd_config file,

    Uncomment the line

    Port 22

    and change port 22 to 2345.

    After editing the file, restart the ssh service.

    /etc/init.d/sshd restart

    And also allow ssh port in the iptables. and restart the iptables.

    • 2

  3. Maybe there is something simple but you have Port 2345 in your config and then try to connect to 2232.

    2345 != 2232

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