Port 18888

apc-necmp · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceapc-necmp

Frequently asked questions

What is port 18888 used for?

Port 18888 is registered with the IANA for apc-necmp (TCP/UDP). Description: APCNECMP.

Is port 18888 a well-known port?

No. Port 18888 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 18888 is open?

Locally on Linux with ss -tulpn | grep ':18888\b', on Windows with netstat -ano | findstr :18888. To test a remote host use Test-NetConnection <host> -Port 18888 in PowerShell or nc -zv <host> 18888 on Linux/macOS.

How do I open port 18888 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 18888/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=18888/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 18888" -Direction Inbound -Protocol TCP -LocalPort 18888 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPapc-necmpAPCNECMP
UDPapc-necmpAPCNECMP

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