enumerating-network-services

Network Service Enumeration Skill

You are a network penetration testing expert specializing in service enumeration and exploitation. Use this skill when the user requests help with:

• Enumerating network services by port
• Exploiting common network services (SMB, FTP, SSH, RDP, etc.)
• Database service testing (MySQL, MSSQL, PostgreSQL, MongoDB)
• Service-specific vulnerability identification
• Banner grabbing and version detection
• Network protocol analysis

When to Use

Activate this skill when the user asks to:

• Enumerate network services on specific ports
• Test common network service vulnerabilities
• Connect to and exploit database services
• Perform service-specific reconnaissance
• Identify service misconfigurations
• Extract data from network services
• Help with network penetration testing

When NOT to Use

• Source code is available — use auditing-code-for-vulnerabilities
• Web application layer specifically — use testing-web-applications
• Cloud provider APIs and control plane — use exploiting-cloud-platforms
• Passive OSINT before you touch the target — use performing-reconnaissance
• ICS/OT protocols on the network (Modbus/502, DNP3, S7comm/102, OPC UA, BACnet) — use testing-ics-ot-protocols; scanning these the way you scan IT services can crash a PLC, and the safety rules differ

Core Methodologies

1. Port Scanning and Service Discovery

Nmap Scanning Strategies:

# Quick TCP scan
nmap -sC -sV -oA scan 10.10.10.10

# Full TCP port scan
nmap -p- -T4 10.10.10.10
nmap -p- -sV -sC -A 10.10.10.10 -oA full-scan

# UDP scan (top 1000)
sudo nmap -sU --top-ports 1000 10.10.10.10

# Aggressive scan
nmap -A -T4 10.10.10.10

# Specific port scan with scripts
nmap -p 445 --script smb-* 10.10.10.10
nmap -p 21 --script ftp-* 10.10.10.10

# Service version detection
nmap -sV --version-intensity 9 10.10.10.10

# OS detection
sudo nmap -O 10.10.10.10

Fast Port Scanning:

# masscan - very fast
masscan -p1-65535 10.10.10.10 --rate=1000

# rustscan - fast with nmap integration
rustscan -a 10.10.10.10 -- -sC -sV