← Port Encyclopedia
291
Port-291
TCP
System Low Risk
Reserved or unassigned port 291 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 291

nmap -sV -p 291 target
nmap -sV -sC --script=banner -p 291 target
nc -zv target 291

🛡️ Security Considerations

  • Scan port 291 with nmap -sV to identify the exact service and version
  • If Port-291 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-291 to find known exploits
  • Monitor traffic on port 291 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
Port 7
Echo
Port 9
Discard
Port 11
systat
Port 13
Daytime
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QOTD
Port 19
Chargen
Port 37
Time
Port 79
Finger
Port 111
RPCbind
Port 113
Ident

📍 Nearby Ports

Port 286
Port-286
Port 287
Port-287
Port 288
Port-288
Port 289
Port-289
Port 290
Port-290
Port 292
Port-292
Port 293
Port-293
Port 294
Port-294
Port 295
Port-295
Port 296
Port-296
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