Port 4989

parallel · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceparallel
Registered2003-03

Frequently asked questions

What is port 4989 used for?

Port 4989 is registered with the IANA for parallel (TCP/UDP). Description: Parallel for GAUSS (tm).

Is port 4989 a well-known port?

No. Port 4989 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4989 is open?

Locally on Linux with ss -tulpn | grep ':4989\b', on Windows with netstat -ano | findstr :4989. To test a remote host use Test-NetConnection <host> -Port 4989 in PowerShell or nc -zv <host> 4989 on Linux/macOS.

How do I open port 4989 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4989/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4989/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4989" -Direction Inbound -Protocol TCP -LocalPort 4989 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPparallelParallel for GAUSS (tm)
UDPparallelParallel for GAUSS (tm)

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