Content hub · Baselines & response
Security
Cloud security baselines and incident response: hardening checklists, SSL / DNS / email authentication, DDoS and abuse, emergency response, compliance, privacy, identity, supply chain and AI security.
Protection6
- Baseline Hardening★ Featured
SSH Hardening Checklist: Twelve Actions for the First Hour
Key login, password auth off, root restricted, fail2ban, firewall, updates, alerts, audit logs, baseline snapshot, NTP and a tested recovery channel — command,
- Baseline Hardening★ Featured
SSH 加固清单：上架第一小时的 12 个动作
新服务器上架第一小时的 12 个 SSH 加固动作：密钥登录、禁 root 密码、改默认行为、fail2ban、日志与告警。每个动作一条命令 + 一个「为什么」，可直接照抄执行，全部幂等。
- Baseline Hardening
Firewall Baseline: Default-Deny Plus the Minimal Whitelist
Port audit first, then two copy-paste baselines (ufw five-minute version, nftables standard version), three maintenance routines and the three classic failures
- Baseline Hardening
Security Baseline Hub: What to Do in the First Hour After Provisioning
Copy-paste first-hour checklist, least-privilege and panel hardening, 3-2-1 backups, log and audit floor, three intrusion signals, four-step incident response,
- Baseline Hardening
备份不算数，恢复演练才算：季度演练脚本
「有备份」和「能恢复」之间隔着一次演练。本文给出季度恢复演练的完整脚本（拉回、校验、真恢复、计时、归档五步）、RTO/RPO 的记录口径、以及演练发现的三类典型坏备份。
- Baseline Hardening
防火墙基线：默认拒绝 + 最小白名单
防火墙的唯一正确心智模型是「默认拒绝 + 最小白名单」：不是挡住坏的，而是只放行好的。本文给出 ufw/nftables 两套基线配置、端口审计方法与三条常见翻车，全部可复制。
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