Port 1881

ibm-mqseries2 · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceibm-mqseries2

Frequently asked questions

What is port 1881 used for?

Port 1881 is registered with the IANA for ibm-mqseries2 (TCP/UDP). Description: IBM WebSphere MQ Everyplace.

Is port 1881 a well-known port?

No. Port 1881 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 1881 is open?

Locally on Linux with ss -tulpn | grep ':1881\b', on Windows with netstat -ano | findstr :1881. To test a remote host use Test-NetConnection <host> -Port 1881 in PowerShell or nc -zv <host> 1881 on Linux/macOS.

How do I open port 1881 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 1881/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=1881/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 1881" -Direction Inbound -Protocol TCP -LocalPort 1881 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPibm-mqseries2IBM WebSphere MQ Everyplace
UDPibm-mqseries2IBM WebSphere MQ Everyplace

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