← Port Encyclopedia
17
QOTD
TCP/UDP
System
Low Risk
Quote of the Day — returns a text quote, rarely used in modern networks
🔍 How to Scan Port 17
nmap -sV -p 17 target
nmap -sV -sC --script=banner -p 17 target
nc -zv target 17
🛡️ Security Considerations
- Scan port 17 with
nmap -sVto identify the exact service and version - If QOTD is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit qotdto find known exploits - Monitor traffic on port 17 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation