← All Kali Issues
Nmap
Service detection hanging
P Performance
Medium
🔴 Error Message
Service detection taking too long on multiple ports
📖 What This Means
Service detection (-sV) sends probes and waits. Some services respond slowly.
🔧 Step-by-Step Fix
- Reduce intensity: nmap -sV --version-intensity 2 target
- Set max retries: nmap -sV --max-retries 1 target
- Add timeout: nmap -sV --host-timeout 5m target