Port 188

mumps · TCP/UDP

RangeSystem/well-known port (0–1023)
ProtocolTCP/UDP
Servicemumps

Frequently asked questions

What is port 188 used for?

Port 188 is registered with the IANA for mumps (TCP/UDP). Description: Plus Five's MUMPS.

Is port 188 a well-known port?

Yes. Port 188 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.

How do I check whether port 188 is open?

Locally on Linux with ss -tulpn | grep ':188\b', on Windows with netstat -ano | findstr :188. To test a remote host use Test-NetConnection <host> -Port 188 in PowerShell or nc -zv <host> 188 on Linux/macOS.

How do I open port 188 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 188/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=188/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 188" -Direction Inbound -Protocol TCP -LocalPort 188 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPmumpsPlus Five's MUMPS
UDPmumpsPlus Five's MUMPS

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