Port 8081

sunproxyadmin · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicesunproxyadmin
Registered2005-08

Frequently asked questions

What is port 8081 used for?

Port 8081 is registered with the IANA for sunproxyadmin (TCP/UDP). Description: Sun Proxy Admin Service.

Is port 8081 a well-known port?

No. Port 8081 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 8081 is open?

Locally on Linux with ss -tulpn | grep ':8081\b', on Windows with netstat -ano | findstr :8081. To test a remote host use Test-NetConnection <host> -Port 8081 in PowerShell or nc -zv <host> 8081 on Linux/macOS.

How do I open port 8081 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 8081/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=8081/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 8081" -Direction Inbound -Protocol TCP -LocalPort 8081 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPsunproxyadminSun Proxy Admin Service
UDPsunproxyadminSun Proxy Admin Service

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