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Servers – Ensure Iptables is Installed

Support > Fixing Checks > Server

06 March, 2026

This check ensures that iptables is installed on the server.

Iptables is a core component used to configure firewall rules in Linux systems and is essential for managing network traffic and security policies.

Check Details

  • Resource: Server
  • Check: Ensure iptables is installed
  • Risk: Without iptables, firewall configuration and traffic filtering cannot be enforced, increasing exposure to unauthorized access.

Remediation Steps

  1. Open a terminal session with root or sudo privileges.

  2. Verify whether iptables is installed:

    grep '"name": "iptables"' /etc/cos-package-info.json

  3. Confirm that the output includes:

    "name": "iptables"
  4. If iptables is not installed, update the system to an OS image that includes the iptables package.
  5. After updating, re-run the audit command to confirm iptables is installed.
  6. Perform regular checks to ensure firewall tools remain available and properly configured.