How To Secure Memcache on CentOS 7?

Memcached represents a distributed memory caching system that can be incorporated into your server through the official CentOS repository if not already present. In this guide, we will outline the steps to enhance the security of your Memcached server by configuring it to operate within a private network and establishing a trusted user.

1. Begin by accessing the Memcached configuration file at vim/etc/sysconfig/memcached. Adjust the settings to make the Memcached service listen exclusively to your local interface.

2. Once the configuration file is open, append the following to the OPTIONS variable: -l 127.0.0.1 -U 0.

3. Following the configuration adjustments, proceed to restart and enable the Memcached service.

4. Utilize the “netstat” command to verify that Memcached is bound to the local interface and has an active TCP connection.

5. Include port 1121 in the firewall rules to permit access to the Memcached server.