cyberstrikeus CIS Ubuntu Linux 18.04 LTS Benchmark v2.2.0 - Control 3.4.1.2
Description
The iptables-persistent is a boot-time loader for netfilter rules, iptables plugin is used by ufw.
Rationale
Running both ufw and the services included in the iptables-persistent package may lead to conflict.
Impact
None.
Audit Procedure
Command Line
Run the following command to verify that the iptables-persistent package is not installed:
dpkg-query -s iptables-persistent &>/dev/null && echo "iptables-persistent is installed"
Nothing should be returned.
Expected Result
No output should be returned (the package is not installed).
Remediation
Command Line
Run the following command to remove the iptables-persistent package:
apt purge iptables-persistent
Default Value
iptables-persistent is not installed.
References
- NIST SP 800-53 Rev. 5: CA-9, SC-7
- CIS Ubuntu Linux 18.04 LTS Benchmark v2.2.0
CIS Controls
Version 8
4.4 Implement and Manage a Firewall on Servers - Implement and manage a firewall on servers, where supported.
4.5 Implement and Manage a Firewall on End-User Devices - Implement and manage a host-based firewall or port-filtering tool on end-user devices.
Version 7
9.4 Apply Host-based Firewalls or Port Filtering - Apply host-based firewalls or port filtering tools on end systems, with a default-deny rule that drops all traffic except those services and ports that are explicitly allowed.
Profile Applicability
- Level 1 - Server
- Level 1 - Workstation
Assessment Status
Automated