Port 373

legent-1 · TCP/UDP

RangeSystem/well-known port (0–1023)
ProtocolTCP/UDP
Servicelegent-1

Frequently asked questions

What is port 373 used for?

Port 373 is registered with the IANA for legent-1 (TCP/UDP). Description: Legent Corporation.

Is port 373 a well-known port?

Yes. Port 373 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 373 is open?

Locally on Linux with ss -tulpn | grep ':373\b', on Windows with netstat -ano | findstr :373. To test a remote host use Test-NetConnection <host> -Port 373 in PowerShell or nc -zv <host> 373 on Linux/macOS.

How do I open port 373 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 373/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=373/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 373" -Direction Inbound -Protocol TCP -LocalPort 373 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPlegent-1Legent Corporation
UDPlegent-1Legent Corporation

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