You also learnt about basic configuration options that need to be applied in order to run a secure and robust SSH server over a LAN or over Internet. In this tutorial, you learnt how you can install and configure a SSH server on Debian 10 hosts. Debian : Unable to locate package openssh-serverįor this one, you have to make sure that you have set correctly your APT repositories.Īdd the following entry to your sources.list file and update your packages. If you are not sure about how to do it, follow our guide about SSH key authentication on Debian 10. If you are using SSH keys for your SSH authentication, you may need to double check that the key is correctly located in the “authorized_keys” file. PermitRootLogin yes SSH key access denied If you are using the password method, double check your password and make sure you are entering it correctly.Īlso, it is possible to configure SSH servers to allow only a specific subset of users : if this is the case, make sure you belong to that list.įinally, if you want to log-in as root, make sure that you modified the “PermitRootLogin” option in your “sshd_config” file. To solve this issue, it depends on the authentication method you are using. Sometimes, you may be denied the access to your SSH server with this error message “SSH access denied” on Debian. $ sudo iptables -I INPUT -p tcp -m tcp -dport 22 -j ACCEPT Debian : SSH access denied If the rule is not set for SSH, you can set by running the iptables command again. $ sudo iptables -L -nĪCCEPT tcp - anywhere anywhere tcp dpt:ssh If you are using iptables, you can also have a check at your current IP rules with the iptables command. To solve “SSH connection refused” you have to double check your UFW firewall settings.īy default, Debian uses UFW as a default firewall, so you might want to check your firewall rules and see if SSH is correctly allowed. Usually, you are getting this error because your firewall is not properly configured on Debian. Here is the list of the common errors you might get during the setup. In some cases, you may run into many error messages when trying to setup a SSH server on Debian 10.
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