Requirements
- Target platform
- OpenClaw
- Install method
- Manual import
- Extraction
- Extract archive
- Prerequisites
- OpenClaw
- Primary doc
- SKILL.md
Tencent SkillHub ยท Security & Compliance
Host Hardening
Harden an OpenClaw Linux server with SSH key-only auth, UFW firewall, fail2ban brute-force protection, and credential permissions. Use when setting up a new...
skill openclawclawhub Free
Harden an OpenClaw Linux server with SSH key-only auth, UFW firewall, fail2ban brute-force protection, and credential permissions. Use when setting up a new...
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Install for OpenClaw
Quick setup
- Download the package from Yavira.
- Extract the archive and review SKILL.md first.
- Import or place the package into your OpenClaw setup.
Package facts
- Download mode
- Yavira redirect
- Package format
- ZIP package
- Source platform
- Tencent SkillHub
- What's included
- SKILL.md
Validation
- Use the Yavira download entry.
- Review SKILL.md after the package is downloaded.
- Confirm the extracted package contains the expected setup assets.
Install with your agent
Agent handoff
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
New install
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
Upgrade existing
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
Trust & source
Release facts
- Source
- Tencent SkillHub
- Verification
- Indexed source record
- Version
- 1.0.4
Provenance
- Publisher
- ppiankov
- Source page
- View original listing
- Canonical URL
- Open canonical page
Documentation
Host Hardening
Secure a Linux server running OpenClaw.
Requirements
OS: Linux (Ubuntu/Debian โ adjust package commands for other distros) Privileges: Root or sudo required โ this skill modifies system-wide security config Pre-check: Verify you have SSH key-based access before disabling password auth โ ๏ธ All commands below modify system configuration. Confirm with the user before running each section. Do not run these automatically without explicit approval.
SSH โ Key-Only Auth
Disables password authentication. Ensure key-based SSH works first or you will be locked out. sed -i 's/^#*PermitRootLogin.*/PermitRootLogin prohibit-password/' /etc/ssh/sshd_config sed -i 's/^#*PasswordAuthentication.*/PasswordAuthentication no/' /etc/ssh/sshd_config systemctl restart ssh
Firewall โ Deny All Except SSH
ufw default deny incoming ufw default allow outgoing ufw allow ssh yes | ufw enable Add more rules as needed (e.g. ufw allow 443 for HTTPS).
Fail2ban โ Brute-Force Protection
Installs fail2ban via apt (Debian/Ubuntu). Adjust for other package managers. apt-get install -y fail2ban systemctl enable --now fail2ban Default config protects SSH. For custom jails: /etc/fail2ban/jail.local.
OpenClaw Credentials
chmod 700 ~/.openclaw/credentials
OpenClaw Gateway Service (optional)
Creates a systemd service for auto-restart on reboot. Runs as root โ review the service file before enabling. cat > /etc/systemd/system/openclaw-gateway.service << 'EOF' [Unit] Description=OpenClaw Gateway After=network-online.target Wants=network-online.target [Service] Type=simple ExecStart=/usr/bin/env openclaw gateway Restart=always RestartSec=5 User=root WorkingDirectory=/root/.openclaw Environment=HOME=/root [Install] WantedBy=multi-user.target EOF systemctl daemon-reload && systemctl enable openclaw-gateway
Verify
ufw status # active, SSH allowed systemctl is-active fail2ban # active grep PasswordAuthentication /etc/ssh/sshd_config # no stat -c %a ~/.openclaw/credentials # 700 systemctl is-enabled openclaw-gateway # enabled
Lessons
On Ubuntu, SSH service is ssh not sshd AWS security groups provide network-level filtering but UFW is defense-in-depth Always verify key-based SSH access before disabling password auth The gateway service is optional โ only needed if OpenClaw should survive reboots Host Hardening v1.0 Author: ppiankov Copyright ยฉ 2026 ppiankov Canonical source: https://clawhub.com/skills/host-hardening License: MIT If this document appears elsewhere, the link above is the authoritative version.
Category context
Identity, auth, scanning, governance, audit, and operational guardrails.
Source: Tencent SkillHub
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Package contents
Included in package
1 Docs
- SKILL.md