Server Hardening
Comprehensive server security hardening following CIS benchmarks. SSH configuration, firewall rules, fail2ban, kernel tuning, and automated security updates.
Default server configurations are insecure. Open SSH on port 22, no firewall, root login enabled — it's a matter of time before someone gets in.
We harden your server following industry best practices: SSH key-only auth, custom ports, UFW firewall, fail2ban, kernel tuning, and automated security updates.
What You Get
SSH Security
Key-only auth, custom port, rate limiting
Firewall
UFW with deny-by-default, only open necessary ports
Brute Force
fail2ban bans repeated failed login attempts
Auto Updates
Automatic security patches without intervention
How It Works
Audit
We scan your server for vulnerabilities and misconfigurations
SSH Hardening
We configure key-only auth, custom port, and rate limiting
Firewall
We set up UFW/iptables with deny-by-default policies
Monitoring
We install fail2ban and security monitoring
Tech Stack
Deliverables
Server Hardening
one-time
Timeline: 1–2 business days
Get a QuoteFree consultation. No commitment required.
Frequently Asked Questions
Will this break my existing services?
No. We audit all running services before configuring firewall rules to ensure nothing gets blocked accidentally.
What about kernel hardening?
We tune sysctl parameters for network security (SYN flood protection, ICMP restrictions), disable unnecessary kernel modules, and configure secure defaults.
Do you set up monitoring after hardening?
Yes. fail2ban provides intrusion detection, and we can add Prometheus node-exporter for full system monitoring as an add-on.
Can you harden a production server without downtime?
Most changes are applied without restart. SSH config changes are tested before closing the current session to prevent lockout.
Related Services
Linux Administration
Troubleshooting, performance tuning, package management, and automation
Network & Firewall Setup
VPN, VLANs, load balancers, DNS, and reverse proxy configuration
Security Audit
Vulnerability assessment, dependency audit, and security recommendations
Ready to Get Started?
Tell us about your project. We respond within 24 hours with a detailed quote.