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Ensure there is no unrestricted inbound access to TCP port 4505 (Salt)

Security & Compliance
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Description

Ensuring that there is no unrestricted inbound access to TCP port 4505 is important in maintaining the security of Salt, a popular configuration management tool used to automate the deployment and management of IT infrastructure. If TCP port 4505 is left open and unrestricted, it can be exploited by attackers to gain unauthorized access to the Salt server, execute arbitrary commands, and potentially compromise the entire infrastructure.By limiting access to TCP port 4505, the attack surface is reduced, and the security of the Salt infrastructure is enhanced. It is important to ensure that only authorized systems and users have access to this port.‍

Remediation

To ensure that there is no unrestricted inbound access to TCP port 4505, you can follow these remediation steps:

  1. Identify the security group or network ACL associated with the instance that has an open TCP port 4505.
  2. Modify the inbound rules of the security group or network ACL to restrict access to TCP port 4505 to authorized IP addresses or subnets.
  3. If the instance is associated with an Elastic IP address, update the associated security group or network ACL to restrict access to TCP port 4505.
  4. Ensure that the changes are applied to all instances that use the same security group or network ACL.
  5. Test the connectivity to the instance to ensure that the port is no longer accessible from unauthorized sources.
  6. If the port is required to be open for specific use cases, restrict the access to authorized IP addresses or subnets and monitor the traffic for any potential security issues.

By following these steps, you can ensure that TCP port 4505 is not left open to unrestricted inbound access, thereby minimizing the risk of unauthorized access and potential security threats.

Enforced Resources
Note: Remediation steps provided by Lightlytics are meant to be suggestions and guidelines only. It is crucial to thoroughly verify and test any remediation steps before applying them to production environments. Each organization's infrastructure and security needs may differ, and blindly applying suggested remediation steps without proper testing could potentially cause unforeseen issues or vulnerabilities. Therefore, it is strongly recommended that you validate and customize any remediation steps to meet your organization's specific requirements and ensure that they align with your security policies and best practices.