← Port Encyclopedia
28
Port-28
TCP
System Low Risk
Reserved or unassigned port 28 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 28

nmap -sV -p 28 target
nmap -sV -sC --script=banner -p 28 target
nc -zv target 28

🛡️ Security Considerations

  • Scan port 28 with nmap -sV to identify the exact service and version
  • If Port-28 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-28 to find known exploits
  • Monitor traffic on port 28 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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Port 37
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Port 79
Finger
Port 111
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Ident

📍 Nearby Ports

Port 23
Telnet
Port 24
Port-24
Port 25
SMTP
Port 26
RSFTP
Port 27
Port-27
Port 29
Port-29
Port 30
Port-30
Port 31
Port-31
Port 32
Port-32
Port 33
Port-33
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