用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/CyberStrikeus/CyberStrike --skill cis-ubuntu1604-v200-2-3命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
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
基于 SOC 职业分类
正在显示 SKILL.md
| name | cis-ubuntu1604-v200-2-3 |
| description | Ensure nonessential services are removed or masked |
| category | cis-networking |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-16.04","services"] |
| cis_id | 2.3 |
| cis_benchmark | CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
A network port is identified by its number, the associated IP address, and the type of the communication protocol such as TCP or UDP.
A listening port is a network port on which an application or process listens on, acting as a communication endpoint.
Each listening port can be open or closed (filtered) using a firewall. In general terms, an open port is a network port that accepts incoming packets from remote locations.
Services listening on the system pose a potential risk as an attack vector. These services should be reviewed, and if not required, the service should be stopped, and the package containing the service should be removed. If required packages have a dependency, the service should be stopped and masked to reduce the attack surface of the system.
Run the following command:
lsof -i -P -n | grep -v "(ESTABLISHED)"
Review the output to ensure that all services listed are required on the system. If a listed service is not required, remove the package containing the service. If the package containing a non-essential service is required, stop and mask the non-essential service.
Only required services should be listed in the output. No unnecessary listening services should be present.
Run the following command to remove the package containing the service:
apt purge <package_name>
OR If required packages have a dependency:
Run the following command to stop and mask the service:
systemctl --now mask <service_name>
Varies by installation type and packages installed.