← Port Encyclopedia
1021

Port-1021

TCP
System Low Risk
Reserved or unassigned port 1021 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 1021

nmap -sV -p 1021 target
nmap -sV -sC --script=banner -p 1021 target
nc -zv target 1021

🛡️ Security Considerations

  • Scan port 1021 with nmap -sV to identify the exact service and version
  • If Port-1021 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-1021 to find known exploits
  • Monitor traffic on port 1021 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
Port 17
QOTD
Port 19
Chargen
Port 37
Time
Port 79
Finger
Port 111
RPCbind
Port 113
Ident

📍 Nearby Ports

Port 1016
Port-1016
Port 1017
Port-1017
Port 1018
Port-1018
Port 1019
Port-1019
Port 1020
Port-1020
Port 1022
Port-1022
Port 1023
Port-1023
Port 1024
Reserved
Port 1025
NFS-RPC
Port 1026
Port-1026
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