Port 397

mptn · TCP/UDP

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

Frequently asked questions

What is port 397 used for?

Port 397 is registered with the IANA for mptn (TCP/UDP). Description: Multi Protocol Trans. Net..

Is port 397 a well-known port?

Yes. Port 397 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 397 is open?

Locally on Linux with ss -tulpn | grep ':397\b', on Windows with netstat -ano | findstr :397. To test a remote host use Test-NetConnection <host> -Port 397 in PowerShell or nc -zv <host> 397 on Linux/macOS.

How do I open port 397 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 397/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=397/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 397" -Direction Inbound -Protocol TCP -LocalPort 397 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPmptnMulti Protocol Trans. Net.
UDPmptnMulti Protocol Trans. Net.

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