Remote-access Guide

open mysql port for remote access

by Prof. Reilly Beier MD Published 2 years ago Updated 1 year ago
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To allow remote connections to a MySQL server, you need to perform the following steps:

  • Configure the MySQL server to listen on all or a specific interface.
  • Grant access to the remote user.
  • Open the MySQL port in your firewall.

Full Answer

How do I allow remote connections to my MySQL database?

By default, MySQL is set to use TCP 3306 port for external connections. Thus, you need to open this port in the firewall by executing the command below: Don’t forget to change 10.5.1.3 in this example to your real IP address. All is set. From now on, your server will allow remote connections to your MySQL database.

How do I grant remote access to a MySQL server through iptables?

If iptables is your default firewall tool, execute the following command to open port 3306 for unrestricted traffic: Note that the command above will allow remote access from all IP addresses on the internet through the MySQL port. Alternatively, you can grant access to a remote user from one specified IP address with the following command:

How do I open a MySQL port for external connections?

Locate the line that contains [mysqld] and add the following code below it, and save the file. (Replace MY.IP.ADDRESS with your actual IP-address.) The default MySQL port for external connections is TCP 3306. You need to open that port by editing firewall configuration.

How do I access my MySQL root account remotely?

If you can’t use your root account remotely, you’ll need to access your server’s shell using the mysql command via a remote SSH connection or by directly accessing the PC or server hosting the server. In your remote MySQL shell (using the mysql tool), type CREATE USER “username”@”x.x.x.x” IDENTIFIED BY “password”; and select Enter.

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How do I allow remote access to MySQL database?

How to Allow Remote Connections to MySQLStep 1: Edit MySQL Config File.Step 2: Set up Firewall to Allow Remote MySQL Connection. Option 1: UFW (Uncomplicated Firewall) Option 2: FirewallD. Option 3: Open Port 3306 with iptables.Step 3: Connect to Remote MySQL Server.

How do I enable remote access to MySQL server Windows?

Connecting to MySQL on WindowsFrom there, type . \mysql.exe -u username -h X.X.X.X:XXXX -p. Replace X.X.X.X:XXXX with your remote server IP address and port number (eg. 100.200. ... Provide your password, when prompted, to complete the sign-in process and access your MySQL database remotely.

How do I check if MySQL has remote access?

If your MySQL server process is listening on 127.0. 0.1 or ::1 only then you will not be able to connect remotely. If you have a bind-address setting in /etc/my. cnf this might be the source of the problem.

How do I connect to a MySQL port?

Use the TCP/IP connection tab and enter the following:Name: optional.Host: your MySQL hostname: mysql.example.com.Username: your database user name.Password: your database user password.Database: optional.Port: 3306.

How do I open MySQL port 3306 on Windows?

Port 3306 is required for MySQL and MariaDB....MySQLOpen the Control Panel and click Security.Click Windows Firewall.Click Advanced Settings, Inbound Rules.Click New Rule.Click Port, then Next. Select TCP. ... Click Next, then click Allow the connection.Check Domain and Private.Enter MySQL as Name and Description.More items...

What port is MySQL?

Port 3306Client - Server Connection Ports Port 3306 is the default port for the classic MySQL protocol ( port ), which is used by the mysql client, MySQL Connectors, and utilities such as mysqldump and mysqlpump.

How do I connect to a remote database?

Allowing a Remote Server to Access Your DatabaseLog into cPanel and click the Remote MySQL icon under Databases.Type in the connecting IP address, and click the Add Host button. ... Click Add, and you should now be able to connect remotely to your database.

How do I connect to a MySQL database?

To Connect to a MySQL DatabaseClick Services tab.Expand the Drivers node from the Database Explorer. ... Enter User Name and Password. ... Click OK to accept the credentials. ... Click OK to accept the default schema.Right-click the MySQL Database URL in the Services window (Ctrl-5).

How do I access MySQL database?

To connect to MySQL Server:Locate the MySQL Command-Line Client. ... Run the client. ... Enter your password. ... Get a list of databases. ... Create a database. ... Select the database you want to use. ... Create a table and insert data. ... Finish working with the MySQL Command-Line Client.

Does port 3306 need to be open?

In general, you should not open port 3306 as it can make your server vulnerable to attack. If you need to connect to your database remotely, there are more secure options than opening port 3306, such as using an SSH tunnel.

Can't connect to MySQL server on remote host?

To allow remote access to MySQL, you have to comment out bind-address (you did) and skip-networking in the configuration file. Next, you have to make sure the user is allowed remote access. Check your user with this: SELECT User, Host FROM mysql.

How do I telnet to port 3306?

Telnet is a network protocol that you will use to connect to the server directly.From a windows machine, access the command line from start -> run -> cmd. ... From inside the command prompt, type the command telnet 3306. ... Hit enter to activate the command.

How do I access my MySQL server from another computer?

Before connecting to MySQL from another computer, the connecting computer must be enabled as an Access Host.Log into cPanel and click the Remote MySQL icon, under Databases.Type in the connecting IP address, and click the Add Host button. ... Click Add, and you should now be able to connect remotely to your database.

How do I enable remote access?

Right-click on "Computer" and select "Properties". Select "Remote Settings". Select the radio button for "Allow remote connections to this computer". The default for which users can connect to this computer (in addition to the Remote Access Server) is the computer owner or administrator.

How do I allow all hosts to connect to MySQL?

To do so, you need to edit the MySQL configuration file and add or change the value of the bind-address option. You can set a single IP address and IP ranges. If the address is 0.0. 0.0 , the MySQL server accepts connections on all host IPv4 interfaces.

Can't connect to local MySQL server?

Here are some reasons the Can't connect to local MySQL server error might occur: mysqld is not running on the local host. Check your operating system's process list to ensure the mysqld process is present. You're running a MySQL server on Windows with many TCP/IP connections to it.

Can MySQL listen to private IP?

If the MySQL server and clients can communicate over a private network, the best option is to set the MySQL server to listen only on the private IP. Otherwise, if you want to connect to the server over a public network, set the MySQL server to listen on all IP addresses on the machine.

Can you set a single IP address for MySQL?

You can set a single IP address and IP ranges. If the address is 0.0.0.0, the MySQL server accepts connections on all host IPv4 interfaces. If you have IPv6 configured on your system, then instead of 0.0.0.0, use ::. The location of the MySQL configuration file differs depending on the distribution.

Step 1: Edit MySQL Config File

Use your preferred text editor to open the mysqld.cnf file. This example uses the nano text editor in Ubuntu 18.04. Enter the following command in your command-line interface to access the MySQL server configuration file:

Step 2: Set up Firewall to Allow Remote MySQL Connection

While editing the configuration file, you probably observed that the default MySQL port is 3306.

Step 3: Connect to Remote MySQL Server

Your remote server is now ready to accept connections. Use the following command to establish a connection with your remote MySQL server:

Does MySQL listen to external connections?

By default, MySQL is not listening for external connections. You need to change that by adding an extra option in the configuration file. Here are the steps: Log in to your server and run this command to determine the location of the MySQL configuration file: mysql --help | grep "Default options" -A 1. The output should look like this:

Can you manage MySQL from home?

This way, you can manage your MySQL database from a distant location, such as your home. However, you need to complete the following steps when you are connected to a local network.

Enable MySQL external connections by editing the config file

For security reasons, by default MySQL is not listening external connections. You need to edit the configuration file /etc/my.cnf to allow external connections. You can find out where teh cofiguration file is located at your system using the following command:

Open the MySQL port editing firewall config file

The default MySQL port for external connections is TCP 3306. You need to open that port by editing firewall configuration. In the following example we are editing iptables firewall configuration. If you are using CSF, please read instructions how to add custom iptables rules with CSF.

Before You Begin

Before you make any changes to your MySQL database, it’s important that you backup your database, especially if you’re working on a production server (a server in active use). Any changes you make to your database, or the server hosting it, could result in serious data loss if something goes wrong.

Editing Your MySQL Configuration File

The first step in configuring MySQL to allow remote connections is to edit your MySQL configuration file. By this stage, this guide will assume you have already connected to the server, PC, or Mac hosting your mySQL database remotely and have console access.

Configuring Your Firewalls

At this stage, your MySQL database should allow remote connections from devices using the IP address you set as the bind-address value in your MySQL configuration file (or from all devices if you set this value to 0.0.0.0 instead). However, connections will still be blocked by your device or network firewall.

Connecting to a Remote Server Using MySQL

After configuring your MySQL database to allow remote connections, you’ll need to actually establish a connection to it. You can do this using the mysql command ( mysql.exe on Windows) from a terminal or PowerShell window.

Allowing Remote User Access to a MySQL Database

By this point, you should be able to connect to your MySQL server remotely using your server’s root user account or another user account with elevated privileges. As this level of access is unsafe, you may prefer to create a more restricted account for accessing your MySQL database.

Securing Your Database Data

Whether you’re working with MySQL or another type of SQL database, it’s important to keep your connections secure to maintain your data security. A good way to do this is to generate SSH keys for remote access to your server, rather than relying on outdated (and easily guessable) passwords.

Architecture

In this tutorial, you deploy two Compute Engine instances. One instance is the server and the other instance is the client as depicted in the following diagram:

Before you begin

Sign in to your Google Cloud account. If you're new to Google Cloud, create an account to evaluate how our products perform in real-world scenarios. New customers also get $300 in free credits to run, test, and deploy workloads.

Installing MySQL client

The following steps describe how to install MySQL on a Compute Engine instance.

Installing MySQL server

The following steps describe how to install MySQL on a Compute Engine instance.

Configuring the MySQL server

Before you can remotely connect to the MySQL server, you need to configure it to listen on its internal IP address. Then, you create a non-root user account for the MySQL client to connect to the server.

Verifying remote access from client to server instance

The following steps describe how to connect to the MySQL server on my-server from your my-client instance.

Firewall considerations in production environments

The default network configuration in Google Cloud includes a firewall rule, default-allow-internal, that allows internal traffic between Compute Engine instances on a wide range of ports, including the MySQL port, port 3306.

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