← Port Encyclopedia
523
IBM-DB2
TCP
Database High Risk
IBM DB2 — database discovery, SQL injection if exposed

🔍 How to Scan Port 523

nmap -sV -p 523 target
nmap -sV -sC --script=banner -p 523 target
nc -zv target 523

🛡️ Security Considerations

  • Scan port 523 with nmap -sV to identify the exact service and version
  • If IBM-DB2 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit ibm-db2 to find known exploits
  • Monitor traffic on port 523 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

🔗 Related Database Ports

Port 591
FileMaker
Port 1433
MSSQL
Port 1434
MSSQL-UDP
Port 1521
Oracle
Port 2100
Oracle-XDB
Port 2483
Oracle-TLS
Port 2484
Oracle-TLS-Alt
Port 2638
Sybase
Port 3050
Firebird
Port 3306
MySQL
Port 3307
MySQL-Alt
Port 5432
PostgreSQL

📍 Nearby Ports

Port 518
Port-518
Port 519
Port-519
Port 520
RIP
Port 521
RIPng
Port 522
Port-522
Port 524
NCP
Port 525
Port-525
Port 526
Port-526
Port 527
Port-527
Port 528
Port-528
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