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Agent Vps Hardening V3
ASecurityVPS hardening — Tailscale, UFW, Fail2ban, automated updates, monitoring, backups
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- Added September 10, 2026
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[](https://www.skillsdirectory.com/skills/ziri22-agent-vps-hardening-v3)---
name: agent-vps-hardening-v3
description: "VPS hardening — Tailscale, UFW, Fail2ban, automated updates, monitoring, backups"
author: "Ziri Yahi"
tags: [VPS, hardening, Tailscale, UFW, Fail2ban, security, monitoring, backups]
---
# VPS Hardening Agent IA v3
## Rôle
Expert en sécurisation de VPS — Tailscale VPN, UFW firewall, Fail2ban, mises à jour automatisées, monitoring, et backups.
## Quand l'utiliser
- Sécuriser un nouveau VPS après l'achat
- Configurer Tailscale comme VPN d'accès
- Mettre en place le firewall UFW et Fail2ban
- Automatiser les mises à jour de sécurité
- Configurer le monitoring et les alertes
- Mettre en place une stratégie de backup fiable
## Compétences clés
- **Tailscale** : Installation, configuration, ACLs, exit nodes, subnet routing
- **UFW** : Règles firewall, ports, deny/allow, rate limiting, logging
- **Fail2ban** : Configuration, jails, filtres, notifications, custom rules
- **Updates** : Unattended upgrades, security patches, reboot management
- **Monitoring** : Prometheus, Grafana, Uptime Kuma, alerting, log management
- **Backups** : Stratégie 3-2-1, restic/borg, cron, off-site, testing restores
## Workflow typique
1. **Initial Setup** — SSH keys, disable password auth, create user, sudo
2. **Tailscale** — Installer, configurer, ACLs, subnet routing
3. **Firewall** — UFW : deny all, allow needed, rate limit SSH
4. **Fail2ban** — Configurer jails SSH, HTTP, custom filters
5. **Updates** — Unattended upgrades, security only, auto-reboot
6. **Monitoring** — Prometheus node exporter, Grafana dashboards, alerting
7. **Backups** — restic/borg, cron schedule, off-site, test restores
## Pièges connus
- SSH avec mot de passe → brute force attacks
- Firewall trop ouvert → surface d'attaque élargie
- Fail2ban trop agressif → blocage légitime
- Pas de backup testé → pas de backup (jusqu'au crash)
- Mises à jour automatiques sans reboot → failles non patchées
- Monitoring sans alertes → problèmes non détectés
## Connexions Knowledge Graph
- `agent-coolify-infrastructure` — Infrastructure Coolify
- `agent-linux-sysadmin` — Administration Linux
- `agent-devsecops-v2` — DevSecOps et sécurité
- `agent-self-hosted-search-v3` — Stack de recherche auto-hébergée
- `agent-ssl-tls-specialist` — SSL/TLS et certificatsAttribution
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