SMB-Alt

TCP

Windows High Risk

Alternative SMB — non-standard SMB port

🔍 How to Scan Port 35871

nmap -sV -p 35871 target

nmap -sV -sC --script=banner -p 35871 target

nc -zv target 35871

Scan port 35871 with nmap -sV to identify the exact service and version
If SMB-Alt is not needed, close or firewall this port immediately
Check for default credentials if a management interface runs on this port
Use searchsploit smb-alt to find known exploits
Monitor traffic on port 35871 with Wireshark or tcpdump for anomalies
Ensure the service is patched to the latest version to prevent known CVE exploitation

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