1352
Lotus Notes
Medium RiskTCP — Email
Port Overview
Port Number
1352
Service Name
Lotus Notes
Transport Protocol
TCP
Category
Email
Security Risk
Medium
Port Range
Registered (1024-49151)
What is Port 1352?
Port 1352 is used by IBM Lotus Notes and Domino server for client-server communication. It handles email, calendar, and collaborative application traffic between Notes clients and Domino servers. Organizations running Lotus/HCL Notes infrastructure require this port to be open.
TCP
Email
Commonly Used
Security Considerations
Port 1352 (Lotus Notes) 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.