← Port Encyclopedia
333
Port-333
TCP
System Low Risk
Reserved or unassigned port 333 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 333

nmap -sV -p 333 target
nmap -sV -sC --script=banner -p 333 target
nc -zv target 333

🛡️ Security Considerations

  • Scan port 333 with nmap -sV to identify the exact service and version
  • If Port-333 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-333 to find known exploits
  • Monitor traffic on port 333 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

🔗 Related System Ports

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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
RPCbind
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Ident

📍 Nearby Ports

Port 328
Port-328
Port 329
Port-329
Port 330
Port-330
Port 331
Port-331
Port 332
Port-332
Port 334
Port-334
Port 335
Port-335
Port 336
Port-336
Port 337
Port-337
Port 338
Port-338
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