← Port Encyclopedia
353
Port-353
TCP
System Low Risk
Reserved or unassigned port 353 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 353

nmap -sV -p 353 target
nmap -sV -sC --script=banner -p 353 target
nc -zv target 353

🛡️ Security Considerations

  • Scan port 353 with nmap -sV to identify the exact service and version
  • If Port-353 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-353 to find known exploits
  • Monitor traffic on port 353 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

🔗 Related System Ports

Port 1
TCPMUX
Port 5
RJE
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Echo
Port 9
Discard
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systat
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Daytime
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QOTD
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Chargen
Port 37
Time
Port 79
Finger
Port 111
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Ident

📍 Nearby Ports

Port 348
Port-348
Port 349
Port-349
Port 350
Port-350
Port 351
Port-351
Port 352
Port-352
Port 354
Port-354
Port 355
Port-355
Port 356
Port-356
Port 357
Port-357
Port 358
Port-358
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