Is port 1801 (Microsoft MSMQ) dangerous?

Port 1801 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 1801 be open on my firewall?

Port 1801 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 1801 use?

Port 1801 (Microsoft MSMQ) uses the TCP/UDP transport protocol and falls under the Messaging category.

:1801 (TCP/UDP)

Microsoft MSMQ

Medium Risk

TCP/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.

Related Ports — Messaging

18 MSP 87 ttylink / link 98 TACNews 99 Metagram 119 NNTP 169 SEND 194 IRC 218 MPP

Related Terms

ARP FTP HTTP ICMP IMAP NTP