Activate or deactivate the SSH server (2024)

Activate the SSH server

The SSH server is deactivated by default in Bitnami virtual machines. However, some applications (like GitLab) require SSH access to import code repositories.

To activate the SSH server, execute the commands below at the server console:

Debian

$ sudo rm -f /etc/ssh/sshd_not_to_be_run$ sudo systemctl enable ssh$ sudo systemctl start ssh

Ubuntu

$ sudo mv /etc/init/ssh.conf.back /etc/init/ssh.conf$ sudo start ssh

Once enabled, configure key-based authentication or password-based authentication and then connect to the virtual machine over SSH.

Deactivate the SSH server

The SSH server is deactivated by default in the Bitnami virtual machines. If you have activated it as described here, you can deactivate it following the opposite steps:

Debian

$ sudo systemctl stop ssh$ sudo systemctl disable ssh

Ubuntu

$ sudo stop ssh$ sudo mv /etc/init/ssh.conf /etc/init/ssh.conf.back
Activate or deactivate the SSH server (2024)

FAQs

How to activate SSH server? ›

Activate the SSH server
  1. sudo rm -f /etc/ssh/sshd_not_to_be_run sudo systemctl enable ssh sudo systemctl start ssh.
  2. sudo mv /etc/init/ssh.conf.back /etc/init/ssh.conf sudo start ssh.
  3. sudo systemctl stop ssh sudo systemctl disable ssh.
  4. sudo stop ssh sudo mv /etc/init/ssh.conf /etc/init/ssh.conf.back.
Feb 3, 2022

How do I enable or disable SSH? ›

Steps
  1. Browse to Engines, then expand the nodes of the engine for which you want to enable or disable SSH access.
  2. Right-click a node, then select Commands > Enable SSH or Commands > Disable SSH.

What is the proper way to stop the SSH server? ›

To stop and disable the SSH server, proceed as follows:
  1. Open a terminal.
  2. Become root .
  3. Issue the following commands: systemctl stop ssh. systemctl disable ssh.

Why should I disable SSH? ›

Security − The biggest reason to disable root-login over SSH is security. When a hacker gains access to a server as the root user, they have complete control over the system. They can install malware, steal sensitive information, and cause irreparable damage.

How to start SSH session? ›

You can start an SSH session in your command prompt by executing ssh user@machine and you will be prompted to enter your password. You can create a Windows Terminal profile that does this on startup by adding the commandline setting to a profile in your settings.json file inside the list of profile objects.

How to OpenSSH server from command prompt? ›

Open “Settings” > “Apps” > “Apps & Features” > “Optional Features” and check if the OpenSSH client is installed - if necessary, install it via “Add Feature”. Open command prompt as administrator, e.g. with Windows search > “cmd.exe” > “run as administrator”. Enter CMD command ssh .

How do I know if SSH is enabled? ›

You can verify that the SSH server is running by running “ssh localhost” on the Linux side. If it asks for the key/password, the server is active: If the server is not running, you can manually start it by running “sudo service sshd start” or “sudo systemctl start sshd”.

Why do we enable SSH? ›

SSH (Secure Shell) access is a secure method for remotely managing systems. This provides you a way to access and control servers over an encrypted connection. This encryption ensures that any intercepted data appears meaningless without decryption.

What does enable SSH mean? ›

SSH or Secure Shell is a network communication protocol that enables two computers to communicate (c.f http or hypertext transfer protocol, which is the protocol used to transfer hypertext such as web pages) and share data.

How to restart SSH server? ›

Instructions
  1. Open the Services control panel which can be done in any of the following ways: Go to Control Panel > Administrative Tools > Services. Open a run box type services. msc and hit enter. ...
  2. Locate and select OpenSSH in the list of services.
  3. On the left click Restart.

How to connect to SSH server? ›

Connecting to your Dedicated Server via Terminal
  1. Open the terminal on your computer.
  2. Type ssh, followed by a space. ...
  3. If you see a message stating “Are you sure you want to continue connecting” type yes, then click the Enter key.
  4. You will then be prompted to enter your password.
Feb 21, 2024

How to disable SSH key? ›

Disable public key authentication in SSH
  1. Log into SSH.
  2. Edit the file with your favorite editor: /etc/ssh/sshd_config.
  3. Lookup the variable: PasswordAuthentication and change 'no' to 'yes'
  4. Save and close the file.
  5. Run this command: service sshd reload.

Is it safe to allow SSH? ›

Using default SSH settings can potentially have several vulnerabilities. For instance, allowing root login or using default ports can make your system an easy target for attackers. Use these best practices instead: Change the default SSH port.

Why is SSH a security risk? ›

SSH private keys are the crown jewels of remote access and a stolen key is a severe risk. Intruders can use stolen keys to impersonate users, access sensitive data, and take total control of a system. They also allow attackers to press lateral movement attacks and move onto other systems quickly and quietly.

Is it safe to use SSH? ›

SSH is "secure" because it incorporates encryption and authentication via a process called public key cryptography. Public key cryptography is a way to encrypt data, or sign data, with two different keys. One of the keys, the public key, is available for anyone to use.

How do I enable and install SSH server? ›

The procedure to install a ssh server in Ubuntu Linux is as follows:
  1. Open the terminal application for Ubuntu desktop.
  2. For remote Ubuntu server you must use BMC or KVM or IPMI tool to get console access.
  3. Type command: $ sudo apt-get install openssh-server.
  4. Enable the ssh service by typing: $ sudo systemctl enable ssh.
Mar 5, 2024

How to enable SSH in Linux terminal? ›

How to Enable SSH Server on Ubuntu
  1. Open your terminal application.
  2. Install the openssh-server package on Ubuntu, run: sudo apt install openssh-server.
  3. Enable ssh server on Ubuntu, run: sudo systemctl enable ssh.
  4. By default, firewall will block ssh access. ...
  5. Open ssh tcp port 22 using ufw firewall, run: sudo ufw allow ssh.
Nov 26, 2023

How to enable SSH port 22? ›

Conclusion
  1. Install UFW firewall on Ubuntu 16.04 LTS server.
  2. Open ssh port 22 using ufw on Ubuntu/Debian Linux.
  3. Configure ufw to forward port 80/443 to internal server hosted on LAN.
  4. Block an IP address with ufw on Ubuntu Linux server.
  5. Limit SSH (TCP port 22) connections with ufw on Ubuntu Linux.
Mar 13, 2024

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