Luke Grimes has recently joined a multinational company as a cloud security engineer.

To reduce the risk of man-in-the-middle attacks in all Redshift clusters, Luke Grimes should enable the require_ssl parameter. This setting ensures that connections to Amazon Redshift clusters are required to use encryption in transit, which is crucial for securing data and preventing eavesdropping or manipulation of network traffic.

SSL (Secure Sockets Layer): SSL is a standard security technology for establishing an encrypted link between a server and a client—typically a web server (website) and a browser, or a mail server and a mail client1.

require_ssl Parameter: By setting the require_ssl parameter to true, Luke will enforce that all connections to the Redshift clusters use SSL encryption. This helps to protect against man-in-the-middle attacks by encrypting the data as it travels between the client and the Redshift cluster2.

Implementation Steps:

Navigate to the Redshift service in the AWS Management Console.

Select the appropriate cluster and go to its properties.

Under the database configurations, locate the Parameter group settings.

Edit the parameters and set require_ssl to true.

Save the changes to enforce SSL for all connections to the cluster.

References:

AWS Security Hub: Amazon Redshift controls1.

AWS RedShift Enforce SSL | Security Best Practice2.