← Port Encyclopedia
1
TCPMUX
TCP
System
Low Risk
TCP port service multiplexer — rarely used, can indicate misconfigured systems
🔍 How to Scan Port 1
nmap -sV -p 1 target
nmap -sV -sC --script=banner -p 1 target
nc -zv target 1
🛡️ Security Considerations
- Scan port 1 with
nmap -sVto identify the exact service and version - If TCPMUX is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit tcpmuxto find known exploits - Monitor traffic on port 1 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation