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Technical Article => Database =>  MySQL

How Do I Enable Remote Access To MySQL Database Server?

  VIVEK GITE      2011-10-31 00:31:41      3,242    0    0

By default remote access to MySQL database server is disabled for security reasons. However, some time you need to provide remote access to database server from home or a web server. If you want to remotely access to the database server from the web server or home, follow this quick tutorial.

MySQL Remote Access

You need type the following commands which will allow remote connections.

Step # 1: Login Using SSH (if server is outside your data center)

First, login over ssh to remote MySQL database server:

ssh user@mysql.nixcraft.i
Step # 2: Edit my.cnf File

Once connected you need to edit the MySQL server configuration file my.cnf using a text editor such as vi.

If you are using Debian Linux file is located at /etc/mysql/my.cnf location
If you are using Red Hat Linux/Fedora/Centos Linux file is located at /etc/my.cnf location
If you are using FreeBSD you need to create a file /var/db/mysql/my.cnf
Edit /etc/my.cnf, run:
# vi /etc/my.cnf

Step # 3: Once file opened, locate line that read as follows

Make sure line skip-networking is commented (or remove line) and add following line

For example, if your MySQL server IP is then entire block should be look like as follows:

user            = mysql
pid-file        = /var/run/mysqld/
socket          = /var/run/mysqld/mysqld.sock
port            = 3306
basedir         = /usr
datadir         = /var/lib/mysql
tmpdir          = /tmp
language        = /usr/share/mysql/English
bind-address    =
# skip-networking

bind-address : IP address to bind to.
skip-networking : Don’t listen for TCP/IP connections at all. All interaction with mysqld must be made via Unix sockets. This option is highly recommended for systems where only local requests are allowed. Since you need to allow remote connection this line should be removed from my.cnf or put it in comment state.
Step# 4 Save and Close the file

Restart the mysql server, enter:
# /etc/init.d/mysql restart

Step # 5 Grant access to remote IP address

Connect to mysql server:
$ mysql -u root -p mysql

Grant access to a new database

If you want to add a new database called foo for user bar and remote IP then you need to type the following commands at mysql> prompt:

How Do I Grant Access To An Existing Database?
Let us assume that you are always making connection from remote IP called for database called webdb for user webadmin, To grant access to this IP address type the following command At mysql> prompt for existing database, enter:
mysql> update db set Host='' where Db='webdb';
mysql> update user set Host='' where user='webadmin';

Step # 5: Logout of MySQL

Type exit command to logout mysql:
mysql> exit

Step # 6: Open port 3306

You need to open TCP port 3306 using iptables or BSD pf firewall.

A sample iptables rule to open Linux iptables firewall
/sbin/iptables -A INPUT -i eth0 -p tcp --destination-port 3306 -j ACCEPT
OR only allow remote connection from your web server located at

/sbin/iptables -A INPUT -i eth0 -s -p tcp --destination-port 3306 -j ACCEPT
OR only allow remote connection from your lan subnet

/sbin/iptables -A INPUT -i eth0 -s -p tcp --destination-port 3306 -j ACCEPT
Finally save all rules:
# service iptables save

A sample FreeBSD / OpenBSD pf rule ( /etc/pf.conf)
pass in on $ext_if proto tcp from any to any port 3306
OR allow only access from your web server located at

pass in on $ext_if proto tcp from to any port 3306  flags S/SA synproxy state
Step # 7: Test it

From your remote system or your desktop type the following command:
$ mysql -u webadmin –h –p


-u webadmin: webadmin is MySQL username
-h IP or hostname: is MySQL server IP address or hostname (FQDN)
-p : Prompt for password
You can also use telnet to connect to port 3306 for testing purpose:
$ telnet 3306




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git merge again

By sonic0002
Previously there is one picture which shows how git merge works, here is another one.