Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/chaterm/terminal-skills --skill audit- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads audit automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
安全审计
概述
安全审计、漏洞扫描、合规检查技能。
auditd 审计系统
安装与管理
# 安装
apt install auditd audispd-plugins # Debian/Ubuntu
yum install audit # CentOS/RHEL
# 服务管理
systemctl start auditd
systemctl enable auditd
systemctl status auditd
审计规则
# 查看规则
auditctl -l
# 添加规则 - 监控文件
auditctl -w /etc/passwd -p wa -k passwd_changes
auditctl -w /etc/shadow -p wa -k shadow_changes
auditctl -w /etc/sudoers -p wa -k sudoers_changes
# 监控目录
auditctl -w /etc/ssh/ -p wa -k ssh_config
# 监控系统调用
auditctl -a always,exit -F arch=b64 -S execve -k command_exec
# 监控用户操作
auditctl -a always,exit -F arch=b64 -S open -F auid>=1000 -k user_file_access
永久规则
# /etc/audit/rules.d/audit.rules
-w /etc/passwd -p wa -k passwd_changes
-w /etc/shadow -p wa -k shadow_changes
-w /etc/sudoers -p wa -k sudoers_changes
-w /var/log/lastlog -p wa -k logins
-a always,exit -F arch=b64 -S execve -k commands
# 重载规则
augenrules --load
查看日志
# 搜索审计日志
ausearch -k passwd_changes
ausearch -k commands -ts today
ausearch -ua root -ts recent
# 生成报告
aureport
aureport --summary
aureport --login
aureport --file
aureport --executable
日志审计
系统日志
# 查看认证日志
tail -f /var/log/auth.log # Debian/Ubuntu
tail -f /var/log/secure # CentOS/RHEL
# 查看登录记录
last
lastb # 失败登录
lastlog
# journalctl
journalctl -u sshd
journalctl --since "1 hour ago"
journalctl -p err
日志分析
# 统计 SSH 登录失败
grep "Failed password" /var/log/auth.log | awk '{print $11}' | sort | uniq -c | sort -rn
# 统计 sudo 使用
grep "sudo:" /var/log/auth.log | tail -20
# 查找异常登录
grep "Accepted" /var/log/auth.log | grep -v "192.168"
漏洞扫描
Lynis
# 安装
apt install lynis
# 系统审计
lynis audit system
# 查看报告
cat /var/log/lynis-report.dat
OpenSCAP
# 安装
yum install openscap-scanner scap-security-guide
# 扫描
oscap xccdf eval --profile xccdf_org.ssgproject.content_profile_standard \
--results results.xml \
/usr/share/xml/scap/ssg/content/ssg-centos7-ds.xml
# 生成报告
oscap xccdf generate report results.xml > report.html
Nmap 扫描
# 端口扫描
nmap -sV -sC target.com
# 漏洞扫描
nmap --script vuln target.com
# 全面扫描
nmap -A -T4 target.com
文件完整性
AIDE
# 安装
apt install aide
# 初始化数据库
aide --init
mv /var/lib/aide/aide.db.new /var/lib/aide/aide.db
# 检查变更
aide --check
# 更新数据库
aide --update
Tripwire
# 初始化
tripwire --init
# 检查
tripwire --check
# 更新策略
tripwire --update-policy
常见场景
场景 1：监控特权操作
# /etc/audit/rules.d/privileged.rules
# 监控 sudo
-w /usr/bin/sudo -p x -k privileged_sudo
-w /etc/sudoers -p wa -k sudoers_edit
# 监控用户管理
-w /usr/sbin/useradd -p x -k user_add
-w /usr/sbin/userdel -p x -k user_del
-w /usr/sbin/usermod -p x -k user_mod
# 监控网络配置
-w /etc/hosts -p wa -k hosts_edit
-w /etc/network/ -p wa -k network_config
场景 2：合规检查脚本
#!/bin/bash
echo "=== 安全合规检查 ==="
# 检查空密码账户
echo "空密码账户:"
awk -F: '($2 == "") {print $1}' /etc/shadow
# 检查 UID 为 0 的账户
echo "UID=0 账户:"
awk -F: '($3 == 0) {print $1}' /etc/passwd
# 检查 SSH 配置
echo "SSH 配置:"
grep -E "^(PermitRootLogin|PasswordAuthentication)" /etc/ssh/sshd_config
# 检查开放端口
echo "监听端口:"
ss -tlnp
场景 3：登录告警
#!/bin/bash
# /etc/profile.d/login-alert.sh
if [ -n "$SSH_CLIENT" ]; then
IP=$(echo $SSH_CLIENT | awk '{print $1}')
echo "SSH 登录告警: 用户 $USER 从 $IP 登录 $(hostname)" | \
mail -s "SSH Login Alert" admin@example.com
fi
故障排查
| 问题 | 排查方法 |
|---|---|
| 审计日志过大 | 配置日志轮转、过滤规则 |
| 性能影响 | 减少审计规则、优化过滤 |
| 规则不生效 | 检查语法、重载规则 |
# 检查 auditd 状态
auditctl -s
# 查看丢失事件
aureport --summary | grep lost
# 日志轮转配置
# /etc/audit/auditd.conf
max_log_file = 50
num_logs = 5
max_log_file_action = ROTATE
FAQ
What does the audit skill do?
安全审计
How do I install audit?
Run npx skills add https://github.com/chaterm/terminal-skills --skill audit in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/audit/ (personal) or .claude/skills/audit/ (project).
Which AI agents can use audit?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is audit safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains audit?
It is published by chaterm in chaterm/terminal-skills. It has 82 recorded installs.
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