Server: 999 (999.anwing.me)
IP: 38.175.197.196
OS: Debian 12 (bookworm)
Purpose: Pure proxy server (X-UI + Xray + IPsec/L2TP)

Services:
  - X-UI (ports: 6688, 2096)
  - Xray (multiple ports: 7777, 6666, 2001, 3001, 1116, 5555, 5556, 4500, 500, 1701)
  - IPsec/L2TP (strongSwan + xl2tpd)
  - SSH (port 22)
  - No Nginx, no Docker, no databases, no websites

Key Paths:
  - /root/ - Scripts (bbr3.sh, l2tp.sh, xray.sh, kejilion.sh, etc.)
  - /etc/x-ui/ - X-UI database + metrics
  - /etc/ipsec.d/ - IPsec configs
  - /etc/xl2tpd/ - L2TP configs
  - /etc/strongswan.d/ - strongSwan configs

Backup Files:
  - 999-backup.tar.gz (706K) - Contains /root/*.sh, /etc/x-ui/, /etc/ipsec.d/, /etc/xl2tpd/, /etc/strongswan.d/

Note: Pure proxy/VPN server. X-UI and IPsec/L2TP configs are excluded from recovery scope.

Recovery Steps:
  1. Install dependencies: apt install -y xray x-ui strongswan xl2tpd
  2. Restore configs: tar -xzf 999-backup.tar.gz -C /
  3. Restart services as needed
  4. Use scripts in /root/ for reinstallation if needed

=== 7/31核对 ===
- 备份与服务器 /root 零差异, 完整无需补充