Port 8231

hncp-udp-port · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicehncp-udp-port
ReferenceRFC 7788
Registered2016-01-13

Frequently asked questions

What is port 8231 used for?

Port 8231 is registered with the IANA for hncp-udp-port (TCP/UDP). Description: Reserved; HNCP.

Is port 8231 a well-known port?

No. Port 8231 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 8231 is open?

Locally on Linux with ss -tulpn | grep ':8231\b', on Windows with netstat -ano | findstr :8231. To test a remote host use Test-NetConnection <host> -Port 8231 in PowerShell or nc -zv <host> 8231 on Linux/macOS.

How do I open port 8231 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 8231/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=8231/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 8231" -Direction Inbound -Protocol TCP -LocalPort 8231 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCP–Reserved
UDPhncp-udp-portHNCP

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