← Port Encyclopedia
393

Port-393

TCP
System Low Risk
Reserved or unassigned port 393 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 393

nmap -sV -p 393 target
nmap -sV -sC --script=banner -p 393 target
nc -zv target 393

🛡️ Security Considerations

  • Scan port 393 with nmap -sV to identify the exact service and version
  • If Port-393 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-393 to find known exploits
  • Monitor traffic on port 393 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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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 388
Port-388
Port 389
LDAP
Port 390
Port-390
Port 391
Port-391
Port 392
Port-392
Port 394
Port-394
Port 395
Port-395
Port 396
Port-396
Port 397
Port-397
Port 398
Port-398
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