Port 408

prm-sm · TCP/UDP

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

Frequently asked questions

What is port 408 used for?

Port 408 is registered with the IANA for prm-sm (TCP/UDP). Description: Prospero Resource Manager Sys. Man..

Is port 408 a well-known port?

Yes. Port 408 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 408 is open?

Locally on Linux with ss -tulpn | grep ':408\b', on Windows with netstat -ano | findstr :408. To test a remote host use Test-NetConnection <host> -Port 408 in PowerShell or nc -zv <host> 408 on Linux/macOS.

How do I open port 408 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 408/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=408/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 408" -Direction Inbound -Protocol TCP -LocalPort 408 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPprm-smProspero Resource Manager Sys. Man.
UDPprm-smProspero Resource Manager Sys. Man.

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