← Port Encyclopedia
253
Port-253
TCP
System Low Risk
Reserved or unassigned port 253 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 253

nmap -sV -p 253 target
nmap -sV -sC --script=banner -p 253 target
nc -zv target 253

🛡️ Security Considerations

  • Scan port 253 with nmap -sV to identify the exact service and version
  • If Port-253 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-253 to find known exploits
  • Monitor traffic on port 253 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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systat
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QOTD
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Port 111
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📍 Nearby Ports

Port 248
Port-248
Port 249
Port-249
Port 250
Port-250
Port 251
Port-251
Port 252
Port-252
Port 254
Port-254
Port 255
Port-255
Port 256
Port-256
Port 257
Port-257
Port 258
Port-258
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