Menu
The review-first prompt is selected by default. You can switch to a direct command or download a local copy.
Read SKILL.md and any companion files shown by SkillsMP before deciding whether to install.
Based on SOC occupation classification
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
A direct command skips the review prompt. Inspect the source before running it.
npx skills add https://github.com/CyberStrikeus/CyberStrike --skill cis-ubuntu1804-v220-3-4-3-1-3The command stays on one line. Scroll horizontally to inspect it before copying.
Prefer a local copy? Download the files currently available to SkillsMP.
macOS post-exploitation for credential harvesting, DTrace monitoring, TCC bypass, and stealth operations via native tools
Windows userland post-exploitation for credential harvesting, monitoring, AMSI/ETW bypass, and stealth operations
Kubernetes post-exploitation for container escape, secret extraction, RBAC abuse, and cluster persistence
Showing SKILL.md
| name | cis-ubuntu1804-v220-3-4-3-1-3 |
| description | Ensure ufw is uninstalled or disabled with iptables |
| category | cis-networking |
| version | 2.2.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-18.04","networking","firewall","iptables"] |
| cis_id | 3.4.3.1.3 |
| cis_benchmark | CIS Ubuntu Linux 18.04 LTS Benchmark v2.2.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Uncomplicated Firewall (UFW) is a program for managing a netfilter firewall designed to be easy to use.
Running iptables.persistent with ufw enabled may lead to conflict and unexpected results.
None.
Run the following commands to verify that ufw is either not installed or disabled. Only one of the following needs to pass.
Run the following command to verify that ufw is not installed:
dpkg-query -s ufw &>/dev/null && echo "ufw is installed"
Nothing should be returned.
Run the following command to verify ufw is disabled:
ufw status
Expected output: Status: inactive
Run the following commands to verify that the ufw service is masked:
systemctl is-enabled ufw
Expected output: masked
ufw is not installed, or Status: inactive and masked.
Run one of the following commands to either remove ufw or stop and mask ufw:
Run the following command to remove ufw:
apt purge ufw
-OR-
Run the following commands to disable ufw:
ufw disable
systemctl stop ufw
systemctl mask ufw
Note: ufw disable needs to be run before systemctl mask ufw in order to correctly disable UFW.
ufw is installed and enabled by default.
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.
Automated