Is port 523 (IBM-DB2) dangerous?

Port 523 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 523 be open on my firewall?

Port 523 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

Port 523 (IBM-DB2) uses the TCP/UDP transport protocol and falls under the Database category.

:523 (TCP/UDP)

Medium Risk

TCP/UDP — Database

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Port Number 523

Service Name IBM-DB2

Transport Protocol TCP/UDP

Category Database

Security Risk Medium

Port Range Well-Known (0-1023)

IBM DB2 Discovery Service. Used by IBM DB2 database for instance discovery and database cataloging.

TCP/UDP Database Commonly Used

Port 523 (IBM-DB2) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.

Recommendation: Keep the service updated. Monitor logs for unusual activity.