Port 44

mpm-flags · TCP/UDP

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

Frequently asked questions

What is port 44 used for?

Port 44 is registered with the IANA for mpm-flags (TCP/UDP). Description: MPM FLAGS Protocol.

Is port 44 a well-known port?

Yes. Port 44 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 44 is open?

Locally on Linux with ss -tulpn | grep ':44\b', on Windows with netstat -ano | findstr :44. To test a remote host use Test-NetConnection <host> -Port 44 in PowerShell or nc -zv <host> 44 on Linux/macOS.

How do I open port 44 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 44/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=44/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 44" -Direction Inbound -Protocol TCP -LocalPort 44 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPmpm-flagsMPM FLAGS Protocol
UDPmpm-flagsMPM FLAGS Protocol

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