How to Set up a Firewall for Redis using ufw
Here’s the scenario: we have a Redis server running on a Raspberry Pi and we want to make it available to other machines on a network rather than just using the Redis server in a localhost context. We have already added a password to the Redis server instance; however, due to the high-performance capabilities of Redis, it is possible for outside systems to barrage it with massive number of passwords in parallel to break in. It’s time for a firewall.
In this tutorial, we will learn how to set up a firewall for Redis using ufw. The steps we describe will be useful for any Debian-based distribution such as Debian, Ubuntu, or Raspbian, and will equip you to create firewall rules for other applications too.
