Port 387

aurp · TCP/UDP

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

Frequently asked questions

What is port 387 used for?

Port 387 is registered with the IANA for aurp (TCP/UDP). Description: Appletalk Update-Based Routing Pro..

Is port 387 a well-known port?

Yes. Port 387 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 387 is open?

Locally on Linux with ss -tulpn | grep ':387\b', on Windows with netstat -ano | findstr :387. To test a remote host use Test-NetConnection <host> -Port 387 in PowerShell or nc -zv <host> 387 on Linux/macOS.

How do I open port 387 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 387/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=387/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 387" -Direction Inbound -Protocol TCP -LocalPort 387 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPaurpAppletalk Update-Based Routing Pro.
UDPaurpAppletalk Update-Based Routing Pro.

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