Kportscan 3.0 'link' May 2026

Port 80: A wall of stone. A WAF humming in the dark.

| Issue | Likely Cause | Solution | | :--- | :--- | :--- | | SYN scan returns no open ports | KPCap driver not loaded or Windows raw socket blocked | Reinstall driver; run as Admin; enable raw sockets via Group Policy | | Scan is extremely slow | Network congestion or wrong scan mode | Switch from TCP Connect to ARP (local) or reduce thread count in Settings → Performance | | Cannot scan 0.0.0.0 or localhost | Loopback limitations | Use actual IP address (127.0.0.1) or interface IP | | “Access Denied” on modern Windows | Windows Filtering Platform (WFP) blocks raw sockets | Disable WFP temporarily for testing (not recommended permanently) or use TCP Connect mode | | Outdated signatures for service detection | Fingerprint file old | Download latest kpservice.sig from KPortScan update server | kportscan 3.0