← Port Encyclopedia
204

Port-204

TCP
System Low Risk
Reserved or unassigned port 204 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 204

nmap -sV -p 204 target
nmap -sV -sC --script=banner -p 204 target
nc -zv target 204

🛡️ Security Considerations

  • Scan port 204 with nmap -sV to identify the exact service and version
  • If Port-204 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-204 to find known exploits
  • Monitor traffic on port 204 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
Port 11
systat
Port 13
Daytime
Port 17
QOTD
Port 19
Chargen
Port 37
Time
Port 79
Finger
Port 111
RPCbind
Port 113
Ident

📍 Nearby Ports

Port 199
SMUX
Port 200
Port-200
Port 201
AppleTalk
Port 202
Port-202
Port 203
Port-203
Port 205
Port-205
Port 206
Port-206
Port 207
Port-207
Port 208
Port-208
Port 209
Port-209
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