← All Kali Issues
Nmap

SYN scan permission

P Permission High

🔴 Error Message

TCP SYN scan requires root on Unix

📖 What This Means

SYN stealth scan needs raw sockets.

🔧 Step-by-Step Fix

  1. Use sudo: sudo nmap -sS target
  2. Without root use: nmap -sT target (TCP connect)
  3. Or set cap: sudo setcap cap_net_raw+ep /usr/bin/nmap

🔗 More Nmap Issues

Nmap
Host seems down
Nmap
Permission denied raw sockets
Nmap
Service detection hanging
Nmap
NSE script error
Nmap
Scan extremely slow
Nmap
UDP scan requires root
📚 Learn Kali Linux — Free Course
Found this useful? Share it.
Keep going
Free coursesStructured, day-by-day tracks Free hacking labsPractice in your browser, no setup Attack SimulatorHands-on challenges in your browser
Make it count. Join free to earn XP for what you read and solve, keep a streak, and track your progress.
Join free