1801
Microsoft MSMQ
Medium RiskTCP/UDP — Messaging
Port Overview
Port Number
1801
Service Name
Microsoft MSMQ
Transport Protocol
TCP/UDP
Category
Messaging
Security Risk
Medium
Port Range
Registered (1024-49151)
What is Port 1801?
Port 1801 is used by Microsoft Message Queuing (MSMQ) for sending and receiving messages between Windows applications. MSMQ provides reliable, persistent message delivery even when the receiving application or network is temporarily unavailable. It is used extensively in Windows enterprise application integration.
TCP/UDP
Messaging
Commonly Used
Security Considerations
Port 1801 (Microsoft MSMQ) 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.