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WiFi Assessment Framework

Enterprise WiFi Security Assessment Framework

Auditing enterprise WiFi networks requires a structured approach that combines policy review, technical vulnerability scanning, and compliance validation. This framework ensures organizations identify misconfigurations, outdated protocols, and potential attack vectors while aligning with industry standards.

Policy Review and Compliance

Begin by evaluating organizational policies governing WiFi infrastructure. Key areas include:
- Encryption standards: Verify enforcement of WPA3 or WPA2-Enterprise (AES-CCMP) over outdated WEP/WPA.
- Authentication mechanisms: Confirm use of 802.1X with EAP-TLS, PEAP, or Duo Multi-Factor Authentication (MFA).
- Access controls: Ensure role-based access (RBAC) and segmentation between guest, employee, and IoT networks.
- Monitoring and logging: Validate real-time intrusion detection systems (IDS) and syslog retention policies.

Example: Audit configuration files for policy enforcement using tools like grep or awk:

# Check if WPA3 is enforced in hostapd.conf  
grep "wpa_key_mgmt" /etc/hostapd/hostapd.conf  
# Verify EAP-TLS configuration  
grep "eap_type" /etc/raddb/sites-enabled/default

Technical Vulnerability Scanning

Use automated tools to identify technical weaknesses in WiFi infrastructure:

1. Network Discovery and Enumeration

Scan for rogue access points (APs) and misconfigured devices:

# Use Nmap to detect WiFi-enabled devices  
nmap -sU --open --min-rate 1000 -p 1194,53,80,443,U:53,U:80,U:443,U:1194 <target_ip_range>  
# Check for WPS vulnerabilities (if applicable)  
wpscan --url https://<ap_ip>

2. Protocol and Configuration Checks

Identify outdated protocols or misconfigurations:

# Check for WPA2-PSK vulnerabilities (KRACK attacks)  
airmon-ng | grep "wlan0"  
aireplay-ng --deauth 0 -a <ap_mac> wlan0  
# Validate RADIUS server configurations  
radtest <username> <password> <radius_ip> 1812 testing123

3. Vulnerability Assessment Tools

Leverage tools like Nessus, OpenVAS, or Kismac to scan for known vulnerabilities:

# Example OpenVAS scan for WiFi-related risks  
openvas --scanner <scanner_id> --target <target_ip> --task "WiFi Audit"

Compliance and Configuration Auditing

Ensure configurations adhere to standards like NIST SP 800-118 or CIS Controls:
- Default credentials: Scan for hardcoded passwords in configuration files.
- Firmware updates: Verify devices are running patched firmware (e.g., OpenWRT, pfSense).
- SSID broadcasting: Confirm hidden SSIDs are properly configured.

Example: Script to check for default credentials in config files:

# Search for default passwords in /etc/config/  
grep -E "password|secret|admin" /etc/config/* | grep -v "none"

Tools and Methodologies

  • Passive Monitoring: Use Wireshark or tcpdump to analyze traffic for anomalies.
  • Active Testing: Deploy tools like Kismet or Wifite for packet sniffing and exploitation.
  • Penetration Testing: Simulate attacks (e.g., dictionary attacks on WPA-PSK) to test resilience.

Key takeaways

  • A structured assessment combines policy review, technical scanning, and compliance checks.
  • Prioritize WPA3, 802.1X, and MFA to mitigate common WiFi vulnerabilities.
  • Automate audits with tools like Nmap, OpenVAS, and custom scripts for scalability.
  • Regularly update firmware and enforce strict access controls to prevent misconfigurations.
  • Align practices with frameworks like NIST SP 800-118 for standardized security.