How to Perform a Penetration Test on Your Own Server

By Admin · Mar 15, 2026 · Updated Apr 23, 2026 · 206 views · 2 min read

Penetration testing (pentesting) your own server helps you discover vulnerabilities before attackers do. This guide covers legal considerations, methodology, and practical tools for testing your own infrastructure.

Legal Considerations

Only test servers you own or have written permission to test
Notify your hosting provider before testing (some providers require it)
Do not test third-party services or shared infrastructure
Document your authorization and scope

Reconnaissance

# DNS enumeration
dig yourdomain.com ANY
dig yourdomain.com MX
host -t ns yourdomain.com

# Port scanning
nmap -sV -sC -O your-server-ip
nmap -p- your-server-ip  # All 65535 ports

# Service version detection
nmap -sV -p 22,80,443,3306 your-server-ip

# SSL/TLS analysis
sslscan yourdomain.com
testssl.sh yourdomain.com

Vulnerability Scanning

# Nikto — Web server scanner
sudo apt install nikto
nikto -h http://your-server-ip

# WPScan — WordPress scanner (if applicable)
docker run -it wpscanteam/wpscan --url http://yourdomain.com

# SQLMap — SQL injection testing
sqlmap -u "http://yourdomain.com/page?id=1" --batch

# Directory brute-forcing
gobuster dir -u http://yourdomain.com -w /usr/share/wordlists/dirb/common.txt

Manual Testing Checklist

Check for default credentials on all services
Test SSH configuration (password auth, key strength)
Verify firewall rules (are unnecessary ports open?)
Check for information leakage (server headers, error pages)
Test file upload functionality for path traversal
Check for outdated software with known CVEs
Verify SSL/TLS configuration
Test rate limiting on login pages
Check for exposed admin panels
Verify backup files are not publicly accessible

Reporting and Remediation

# Create a findings document with:
# 1. Vulnerability description
# 2. Severity (Critical/High/Medium/Low)
# 3. Steps to reproduce
# 4. Evidence (screenshots, command output)
# 5. Recommended fix
# 6. References (CVE, CWE numbers)

# Prioritize fixes:
# Critical — Fix immediately (active exploitation risk)
# High     — Fix within 48 hours
# Medium   — Fix within 2 weeks
# Low      — Fix during next maintenance window

Automated Pentesting Tools

Metasploit — Comprehensive exploitation framework
Burp Suite Community — Web application security testing
OWASP ZAP — Free web app scanner
Nessus Essentials — Free for up to 16 IPs